Hairi Takahara spends a summer on Torishiro Island, and these four theatrical re-edits of the television series each follow one of the girls he meets there. Shiroha Naruse keeps her distance from everyone on the island until Hairi gets close enough to see the strange power she carries. Kamome Kushima drags him into a treasure hunt she has been planning since a childhood visit. Tsumugi Wenders, who lives in the lighthouse, has to leave when summer ends. Ao Sorakado is carrying out a duty her family has handed down for generations.