Based on a 2008 novel by Hisashi Sekiguchi, the movie stars Takahiro Nishijima of the pop group Aaa as a college student named Keisuke who takes a summer job at a local movie theater called “Gineikan”. While there, he meets a mysterious young woman named Luca (Azusa Mine) who works as the theater’s projectionist. Following an incident which occurred three years ago, she developed a phobia of being outside and has chosen to permanently shut herself inside Gineikan.
The theater’s owner, Minamikawa (Jun Inoue), makes Keisuke agree to three strange rules before agreeing to hire him: don’t go near Luca on Mondays, don’t fall in love with her, and never ask about her past.
Inevitably, Keisuke breaks one of these rules by falling for his new co-worker,