Eita Ishibashi, who prides himself on having zero spiritual sense and 100% sensuality, gets involved in ghost rumors whispered around school. And in a murder case... he had planted a cause with one girl.

The long-awaited summer vacation... he suddenly gets a new sex friend!

Wife, Miharu Hoshino (self-proclaimed). Sex friend Nana Mikami, and even Kiyomi Fuji join in.

Amidst a fulfilling sex life... they decide to go to the beach for a two-night, three-day trip to make summer memories. What will be the outcome of the vacation (?) that awaits them at the summer sea...!?