During summer vacation Nagi decides to spend some time at her private beach with Hayate and Maria. However, when Nagi refuses to get into the water Maria invites all of her friends over to try and encourage her to make the most of the beach. But a series of misunderstandings between Hayate, Hina and Nishizawa leaves Nagi depressed and she becomes possessed by an evil spirit. As such it is once again up to Hayate to save the day. Starring: Rie Kugimiya, Ryoko Shiraishi, Norio Wakamoto, Rie Tanaka