Mrs. X kidnaps J.J. and forces him to solve an enigma; Joshua and Katie reconnect; George is held prisoner on a plane that spirals out of control.
Stephanie ends up traveling to the future and seeing her family's secret revealed, and the consequences that result. Returning to the present, she tries to prevent the future from occurring. Meanwhile, Jim and George track down the criminal responsible for the death of a cop, and Mrs. X assigns someone to watch the pregnant Katie.
The Powell's lives are in danger when a super-villain with animal like powers is tasked by Mrs. X to eliminate the family.
The Powells' lives are in danger when Dr. King orders shape-shifter Victoria Morrow, to infiltrate the household and murder one of the family members; and JJ, with the aid of Daphne, attempts to solve the cold case murder of his ex-girlfriend Natalie's mother.
When George gets credit for one of Jim's secret crime-fighting activities, animosity breaks out between the two friends. Meanwhile, Daphne suspects something is wrong with Katie's new boyfriend, JJ discovers a problem with his powers, and Stephanie and Katie disagree over a personal matter.
Jim and Stephanie plan a romantic evening to celebrate their 18th anniversary, but they find themselves using their powers to deal with a serial arsonist with special powers of his own; Daphne and J.J. join forces to win money in a poker game.
Stephanie tries to uncover the reason behind Jim's sudden loss of powers, which could put an end to his crime fighting days; JJ may be facing criminal charges after he's caught hacking into the school computer system by his teacher; Daphne uses her abilities to impress a boy; and Katie begins falling for her mysterious new beau.
George asks Jim to help him take down a mobster who has eluded arrest for years. Meanwhile, Stephanie disobeys Dr. King's wishes and tries to find out more about Volson's research, and Daphne asks JJ to use his powers to help her impress a boy.
Jim tries to discover the cause of recent earthquakes; Stephanie suspects that J.J. may be lying about his lack of powers; Daphne faces a moral dilemma when she reads the minds of a fellow student and teacher.
Jim and George track a group of thieves robbing high-end weddings after Stephanie's ring is stolen; J.J. asks Daphne to scan the mind of a cute girl.
A neighborhood mom ropes Stephanie into helping out at a school fundraiser, but a bank robbery calls her attention away.