First Astronomical Velocity prepares for their New Year's concert, but Suzu suddenly tells them they don't have enough funds to do the concert. Sonico and Suzu ask their friends to help them preform, and they gladly accept. First Astronomical Velocity will have their New Year's concert!
It's December and the town is buzzing with a Christmas feel. However, there was a department store built next to Sonico's hometown shopping district, and the district is seeing a huge drop of in its customers. The members of the district set up a Christmas operations center and call Suzu in for help...
Sonico finds a small, round, dirty cat by the side of the road. It cries out to her, and Sonico is taken aback by its cuteness, but she remembers how Fuuri and Suzu told her she shouldn't take in any more cats. She ends up taking in the cat, and names it Rice, but...
The Musasaka Festival has begun at Sonico's university. Sonico dresses up as a maid as she works hard in her class's cafe, but the light music club's president shows up suddenly, and wants Sonico to play the guitar in their concert because one of their members is out sick.
First Astronomical Velocity gets to practice for their concert at SuperNova. Fuuri comes late, and find Miina worried that Sonico won't respond, and is locked in the waiting room. They call the manager and get the door open, but find the floor covered in red, and Sonico lying there.
Ouka-chan from Sonico's office gets a job promoting "Fat-burning Moel," a new product. Everyone gets invited to join her on a fancy cruise-liner for the ceremony. Suzu and Sonico stand on the deck of the liner together after the product launch, but a strange person approaches them...
Sonico goes to Okinawa for a modeling shoot. The first day she meets all the staff, and has dinner with them. The manager, Kitamura, shows Sonico back to her room so she could get some rest, but gets invited to go drinking by the client. Another man approaches when he hears Kitamura speaking so highly of his model...
Fujimi Suzu is the leader and bassist of First Astronomical Velocity, the band of which Sonico is a member. Watanuki Fuuri is on the drums. They'll all be playing in one of their regular concerts. Suzu shows Sonico a costume she had rushed ordered so that Sonico could wear it in their next concert. Sonico is ecstatic, but the clothing has some problems...