You will witness ordinary young ladies on the street changing into micro bikinis and taking on a dizzying watermelon-splitting game challenge. After spinning around a bat 30 times, they must overcome obstacles like vibrators and electric massagers to split a watermelon within the time limit for a chance at a big cash prize. This time, three participants join: Rika, a 23-year-old sweets shop clerk; Motoko, a 24-year-old receptionist; and Yuna, a 22-year-old student. If they fail the challenge in their regular clothes, they are fitted with a tiny micro bikini and a remote-controlled vibrator for a retry. With dizzy heads, buzzing crotches, and nipples popping out, a series of lucky pervy incidents await. Their cute, innocent nipples are fully exposed, and they can't walk straight. The bikinis slip, causing constant camel toe and hairless pussy displays. The final challenge is fully nude, putting them in a happy yet embarrassing situation. The watermelon is right in front of them, but a giant electric massager awaits. They writhe from the lewd vibrations, and all fail the challenge. For the penalty game, they are tormented by two men: Rika, who loves electric massagers, climaxes wildly from the giant device; Motoko, a horny girl who squirts and grinds in cowgirl position to cum; and Yuna, whose beautiful big tits bounce lewdly in a frenzied sex session. Everyone feels great, and they reach a win-win happy ending.