Ruka the idol is told by her manager Atsumari that she been booked to star in a bicycle commercial, telling her how lucky she is. Nagi, Hayate, and Maria are watching a recap of Ruka's concert on TV at the Violet Mansion. Ruka got the day off so she makes a surprise visit there and informs them her amazing opportunity. Tactlessly, she doesn't know how to 'ride' a bike so she intensely desires Hayate to teach her how since he's a professional at bicycling. Ruka first practices in the yard but ruins Maria's garden...