Everyone keeps thanking Nauko for things she didn't do. Eventually she realizes the truth: There's an imposter Gauko on the loose!

Naoko and her dad both forget her mom's birthday. They come up with a plan to celebrate at the last minute, but complications arise.

Things are going missing around town. Naoko learns that the thefts are part of Bibilian's invasion plan, and she's not happy about it.

Naoko goes to a community meeting in her parents' place. But when a discussion about a new community center turns into an argument, Gauko intervenes.

When Naoko's mom spoils the ending of her favorite TV show, Naoko gets upset and runs away – to Bibilian's house! But the alien isn't a very good host.

KinPika the penguin is late to school one day. Naoko asks him about what's bothering him, and he invites her over to his very fancy house.

Bibilian orders a copy machine and decides to make clones of Naoko until one of them agrees to date him. When Naoko finds out, she gets angry!

After Naoko gets another bad grade on a math test, her father decides to take up boxing to encourage her to never give up.

When Mr. R3 suddenly explodes one day, the class launches an investigation into the incident. They quickly realize that everyone's a suspect.

Everyone is uploading videos of themselves singing to social media. Saito criticizes them at first, but soon enough he wants in on the action.

Naoko's mom suddenly doesn't remember her, and no one else in town does either! It turns out Bibilian and his family are giving out brainwashing candy.

Naoko's cousin Ichiro comes to visit, along with his snake puppet, Elizabeth. When Elizabeth says one too many mean things, he throws her in the river!

Ichiro and Elizabeth come to visit again just as Naoko and her mom are about to go shopping, so they hang out with Leonard and the Moles.

Under pressure to deliver results, Bibilian orders a world domination machine, only to learn that he has to wait two years for a missing part.

Naoko enjoys being a big sister to Leonard, but she gets jealous when his soccer ambitions lead him to start hanging out with Takashi.

To speed up his conquest of Earth, Bibilian runs for president. But he faces a tough opponent: KinPika's father, who bribes people to vote for him!

Naoko and her friends visit Toshio at the shop, but they get locked in the walk-in freezer. To escape, everyone tries to get Gauko to appear.

The samba competition approaches. Naoko unhappily agrees to join Toshio's samba team, whose big rival is the team led by Naoko's mother!