The Arakawa residents decide to do a physical checkup to prepare for their trip to Venus, and Ric and Star end up trying to 'outsick' each other to get Nino's attention. Later, the girls spend a week in Sister's basement, though after six days everyone drops out except Nino. When it's the boys turn, Ric tries using P-ko's logbook to strike up a conversation, with embarrassing results.

The Mayor decides to hold a tournament to see who is strongest on the riverbank. The winner will be granted one wish, something the rest of the members must help make come true. In the first round, the weaker candidates fight in a battle royale, which P-ko ends up winning. She then faces the stronger candidates in a balloon popping match. Both P-ko and the Mayor pop each others balloons at the same time, and both lose. Two candidates now remain for the title of King, Maria and Sister.