生於台北的Erika,原為家中長子,在東京工作期間開始跨出原生性別,釋放過去努力壓抑的女性認同。本片記錄Erika逐步打造理想身體,直至完成性別重置手術移居日本的生命旅程。藉由在日本與臺灣、男性與女性身分之間的流動與安頓,映照出跨性別在社會體制中游移碰撞的獨特軌跡,並透過其姊姊的視角呈現家人面對衝擊的心路歷程。When working in Tokyo, Erika embarks on the journey of stepping outside the role prescribed by her biological sex and relieving the suppressed feminine self. This film documents Erika's life journey of gradually building up her ideal body image, including the sexual reassignment surgery (SRS). Through Erika's experience moving between Japan and Taiwan, as well as male and female identities, the film sheds light on the unique life experience of transgender people.