Looking for a change from city girls, legendary gigolo Jin Kaito heads to the beach town of Shōnan in search of sun, sea, and summer romance. He sets his sights on Ai — a stunning jet-skiing beauty — but she couldn’t care less. Worse yet, her friends beat him up right on a yacht. And the yacht belongs to none other than Ushio, a feared yakuza boss. As punishment, Jin is taken captive by Ushio’s classy but cold wife, Noriko, and her freakishly strong butler. Their demand? Instead of paying for the damages… Jin must satisfy Noriko. Still undeterred, Jin makes a daring bet with Ai, but can he really charm his way out of this mess?