During winter vacation, Tina sees a TV program about the balmy southern islands and says that she wants to go to the ocean. Aoi proposes that they go visit her villa in the southern islands. They immediately board a cruise ship to make the journey to the island as a group. However, on the way the weather turns nasty and the ship capsizes. Miyabi calls for help, but the radio is broken and proves of no use. They are left wondering if a rescue team will come looking for them.