Ji Won talks to Jong Seok about living in a dorm as he works on entrance exams. Ji Seok misses Ha Sun and decides he will go to visit her in the United States.
Ha Sun goes to the United States as her mother experiences serious complications from a surgery. Kye Sang decides to stay in Korea as dangerous events change his plans about volunteering.
Ji Won sees Jong Seok's good test scores as he drops the paper. Lee Juck comes to the clinic but he is unhappy to hear that Jin Hee has quit.
The Ahn family finds a winning lotto ticket. The problem is they are unsure what to do with it. Nae Sang wants to invest it into the company, but some of the others suggest he pay Kye Sang back. Meanwhile, Jin Hee makes it to the final interview of her dream job.
The impatient Soo Jung starts taking guitar lessons from Seung Yoon. When Young Wook shows up and finds out Ha Sun is dating Ji Seok the two have a very tense encounter. Seung Yoon finds a notice he missed in the mail: He got drafted and his enlistment date is tomorrow.
Nae Sang's old business partner Woo Yeon calls and wants to arrange a meeting. The Ahn family prepares for all the potential scenarios. Later the two bond when out on an errand. With Ha Sun tired of Kye Sang's insistent teasing, her and Ji Seok concoct a plan to humiliate him.
When Seung Yoon realizes the difficulties Jin Hee faces, he takes it upon himself to care for and comfort her. Lee Juck on the other hand does not enjoy Seung Yoon's consistent appearances. When Julien and Ha Sun start developing a closer relationship it worries Ji Seok.
Kye Sang turns to Soo Jung for advice on having a fun day out with Ji Won. When Ji Seok plays an embarrassing prank on Julien, it leaves him furious. Nae Sang, who seeks vengeance on Jin Hee, works together with Julien so they can get their respective revenges.
Jong Seok gets a job as an extra, but the shoot is interrupted by a young girl named Hae Ri. A fierce competitive rivalry between Kye Sang and Ha Sun turns sour. Meanwhile, smitten by Jong Seok, Hae Ri follows Seung Yoon home in hopes of finding her crush.
Soo Jung is having a bad day when she realizes the state of her finances, but it gets even worse when she gets stuck in an elevator. In the process she meets a young man that she decides would make a good boyfriend. Ha Sun helps Jin Hee work through her crush on Kye Sang.
Ha-sun becomes stressed out as she cannot make certain boys in her class listen to her and Ji-sun continues to dump her responsibilities on Ha-sun. Elsewhere, Yoo-Sun mulls over who she is after a friend seeks to answer that question for herself and takes up a monk’s lifestyle.
Jin Hee goes with Kye Sang to the theater as a reward for the work she has done. Kye Sang is leaving for Rwanda but the news surprises everyone in the family.
Lee Juck visits the entire family but Soo Jung and Ji Sun begin to insult him. Nae Sang wants to help Julien by teaching him about the card game Go Stop.
Kye Sang buys New Year’s gifts for all employees of the clinic. Soo Jung is met with anger as she asks her parents for money to buy a coat.
Nae Sang forgets a wedding anniversary as Yoo Sun wants to celebrate the occasion. Ji Seok realizes he did not bring his wallet and Ha Sun will have to pay for their meal.
Ji Seok is hit by a car as he tries to catch Ha Sun before she leaves for the United States. Jin Hee wants to change Ji Won’s mind about a possible move.
Ha Sun trades jewelry chains with Ji Seok after she develops a metal allergy. Ji Seok learns that he has a polyp and the suggested treatment for his condition is surgery.
A patient cannot pay for medical treatment but he offers his services instead of money. Soo Jung is acting out and her behavior is creating problems for the entire family.
Family members are eager to participate in a badminton tournament that offers a ski trip as the grand prize. Jin Hee helps an elderly man who appears to be homeless.
Kye Sang helps a local woman that needs money for food and a place to stay. Ji Won becomes a teacher when she assists Jong Seok with basic English vocabulary.
Ha Sun sees a man who fraudulently took money for a house deposit. Ji Won wears Ha Sun’s clothes to change her look while on a date with Kye Sang.
An upset Seung Yoon is told to speak like a resident of Seoul because Korea features many dialects. Kye Sang sees Ha Sun walking alone and he offers to take her home.
Ha Sun and Kye Sang talk about Ji Won after her narcolepsy is revealed. Nae Sang goes on a hike with Jong Seok and Soo Jung but an accident occurs.
Jin Hee makes lunch for Kye Sang but she fails to deliver it. Huh Gak is chosen to sing when Nae Sang looks for another person to work on a project.
Ahn Soo Jung looks for a job that will provide extra income. Ji Won and Soo Jung are taken in by authorities while still wearing their unique costumes.
Ji Seok continues his pursuit of Ha Sun with a renewed fervor. The two end up going out on a dinner date. Nae Sang seeks out his former scamming business partner
Ji Seok tells Ha Sun to think over his confession of his love. Ji Won and Jong Seok move their tutoring sessions to the university, and Seung Yoon earns some admirers for his music.
It is New Year's Eve for the family. Ha Sun and Ji Seok go out for drinks but Ha Sun loses her wallet when she dozes off. Nae Sang creates a kite for the family to write down their wishes for the new year, and Jin Hee comforts the homesick Julien.
Yoo Sun's frustration with Kye Sang's disinterest in dating makes her arrange a date between him and Ha Sun. Ji Seok and Jin Hee rush to stop the date. Nae Sang looks to seek out more work, so he hires a number of foreigners to serve as extras.
With Jong Seok's grades improving, the Ahn family tries to think up a way to repay Ji Won. They agree to an absurd tiered reward system. Jin Hee tries to arrange a dentist appointment for Kye Sang, but his childhood fear of them gets in her way.
It is Christmas season for the Ahn family. Nae Sang is stuck working late on the set, and things get worse when there isn't an available extra for a part. When Ha Sun tries to convince Kye Sang to go on a blind date with a co-worker, Lee Juck accepts.
When Jong Seok and Ji Won are studying an unfortunate accident leaves Ji Won in a cast. The incident helps the two to get closer. Jin Hee gets accepted for a second round of interviews, but loses the wallet that Kye Sang allegedly made lucky with incantations.
Together, Jin Hee and Kye Sang entertain kids coming in for vaccines. They later enter a dancing contest to win a prize. When Nae Sang is forced to give the lacking extras acting lessons, he finds one is a talented actress: Park Hae Mi from the first High Kick.
Jong Seok's scores on the exams are far higher than his previous attempt, so he gets some money from his praising family. Through a confused series of events his gift for Ji Won ends up in Ha Sun's hands and Jong Seok seeks to correct it.
When Jin Hee receives some constructive criticism from Kye Sang, she takes it the wrong way and attempts to sabotage his reputation as a doctor.
Ha Sun is having a bad day. She is having trouble dealing with her out of control class. When she goes to a hair salon to brighten up her day, things get worse when she is mixed up with another client and ends up with a punk rock hairdo.
When the family throws a barbecue, the lights go out and Nae Sang and Kye Sang receive kicks to the rear from an unknown attacker. The gang sets out to solve the mystery, following a wacky theory by Seung Yoon.
Kye Sang and Jin Hee plan an event for seniors that is a sort of dating game. When the scores come out for the college exams, Jong Seok is ridden with guilt as he tries to hide his poor scores from his family.
Ha Sun is starting to question her feelings for Young Wook, but does her best to like him more. Nae Sang decides he wants to start his business up again, but to do so he needs money. He takes on multiple jobs and ends up over working himself.
After Kye Sang fools Jin Hee that he can read her mind using a magic trick, he decides to put on a magic show for the kids. Soo Jung and Jong Seok continue their bickering at school. Ji Seok takes it upon himself to make them reconcile.
After Ha Sun mistakes a photo op for an attempt at a kiss, Young Wook thinks he should have made a move. Seung Yoon realizes that he had the relationships of the Ahn family completely mixed up, and after a joke by Soo Jung he believes they are spies.
When Seung Yoon brings candy over and Nae Sung misses the boat, it triggers a series of events that result in a strange change of demeanor. When Ha Sun suffers an allergic reaction to a necklace Young Wook got her, it makes Ji Seok respond with anger.
Ji Seok feels the pain of Young Sook being chosen over him by Ha Sun. Nae Sung attempts to use Julien to win a karaoke contest. Young Sook takes Ha Sun to an expensive Italian restaurant, but his attempts to impress her only make him look foolish.
Jong Seok and Ji Won make a high stakes bet over the reality of a movie's stunts. When Nae Sung drops by his neighbor's house and grabs a few beers, it sparks tension between the two. The result is an absurd security system set up by the Ahn family.
Ji Seok and Ha Sun's relationship stands on strange grounds. She accepts a date to a baseball game with Ji Seok, however Young Wook and her seem to be spending more time together. Meanwhile Nae Sung sets out to scare the uneasily shaken Kye Sang.
When a lively new teacher comes to the school, Ha Sun is led to reflect on her own less dynamic teaching method. Kye Sang and Jin Hee's relationship takes a new turn when they go out for dinner, and she hears some unexpected words from Kye Sang.
Jong Seok becomes frustrated with his poor school performance and the harassment he gets from his peers because of it. When Kye Sang invites Lee Juck over he meets the entirety of the Ahn family. He finds it difficult to withstand the family's constant antics.
After tasting a special pie made by Julien's grandfather, Nae Sung is filled with inspiration for a business venture. Jin Hee gets Kye Sang a spot in a smiley photo exhibition. Kye Sang later causes trouble for her when is the proctor of a test she is taking.
Jong Seok is getting failing grades in school and the family is forced to figure out a solution. Meanwhile, a video of an intoxicated Ha Sun at a baseball game is going viral. An accidentally sent text message causes Ha Sun to become furious at Ji Seok.
Seung Yoon comes by to visit Jong Seok, but Yoo Sun discourages him from visiting. Conflict ensues. Jin Hee considers the possibility that Kye Sang has a crush on her and tests him to find out. Her intense feelings trigger strange dreams and sleepwalking.
Baek Jin Hee thinks that Yoon Kye Sang likes her after misinterpreting events. Yoon Yoo Sun urges a special test for someone close to Ahn Jong Suk and Baek Jin Hee has an odd dream.
Ha Sun and Ji Seok pay a visit to Kye Sang after Ha Sun is bit by a stray dog. Kye Sang's cheery disposition is not enough to dissolve Ha Sun's worries. While wallowing in the frustrations of her job, Nae Sung stops by and comforts Jin Hee.
When they are forced to deal with a number of bills an argument erupts between Nae Sung and Kye Sang. Nae Sang sets out to get the 900,000 Won the family needs. Young Wook lies to Ha Sun about a black eye in order to impress her.
Tensions erupt between the family members when Soo Jung's new attic room is complete. Jong Seok attempts to use seniority to get the room, sparking a family wide dilemma. Kye Sang runs into Ji Won at a protest and the two share in an intimate conversation.
When their car is devoid of gas, the Ahn family is left in the middle of Kyung-ju with nowhere to go. They meet a quirky local boy named Seung Yoon who feeds them. Jin Hee gets a call for an internship at a big company.