Couples on the street challenge each other to a game of endurance where they have to carry their girlfriend on their backs and hold her in their arms! The boyfriend carries his girlfriend on his back and holds her in his arms, and as she shows off her panties, he plays all sorts of pranks on her. If he can keep her from dropping her to the floor within the time limit, he'll win 1 million yen! However, he tickles her with a brush! Licking her bare feet! Attacking her with a vibrator! Even her boyfriend can't keep his balance and is left shaking! Unable to endure, everyone fails! She has to have an instant fuck as a punishment!