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小友(柿原琳佳 飾)因媽媽突然離家出走，被迫投靠許久未見的舅舅牧生(桐谷健太 飾)，意外發現舅舅的同居戀人凜子(生田斗真 飾)，其實是個「靈魂生錯身體」的跨性別者，已透過手術從男兒身變成女生。儘管充滿未知的好奇，但凜子親切與溫柔的照顧，逐步讓小友卸下心防，讓她第一次體會到『家』的感覺…。

11-year-old Tomo (Rinka Kakihara) lives with mother Hiromi (Mimura), but Hiromi decides to give up on her and leaves their home. Tomo, now all alone, visits her uncle Makio's (Kenta Kiritani) home. Makio lives with his beautiful girlfriend Rinko (Toma Ikuta). Rinko was born as a man and now works as a caregiver at a home for the elderly. Tomo is a little confused by the situation, but they begin to live as a family.