Feng runs away from her rural home to pursue singing in Taipei but is trafficked to Japan as a prostitute. Years later, she returns to Taiwan, burdened by guilt and avoiding her family while secretly sending money home. Her brother Ming, now a police officer, searches for her, unaware of the life she now leads. Their paths cross under difficult circumstances, forcing both siblings to confront their past and present.

Anne—seated in an obstetrics and gynecology clinic—grapples with a heart-wrenching dilemma: whether to terminate her unexpected pregnancy to pursue a high-paying job in the United States or stay in Taiwan and embrace life as a single mother. As the conflict between her rationality and emotions intensifies, her deep-seated fear of family life emerges like an unfathomable monster from within, threatening to consume her entirely.

Elder sister, Spring, seeks her origins before heading to university, Autumn, the mother, grapples with conceiving a child through artificial insemination, Summer, the younger brother, tries to engage with a paternal figure he barely knows just before his military service, and Winter, the father, desperately tries to change his fate as problems mount up.