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.

As Jun waits leisurely to enlist in the army, everything starts to go sloppy after two lines appear on his girlfriend’s pregnancy test. Jun, who lost his father as a child, is at a loss because of his sudden “fatherhood”. Meanwhile, his mother Jia-ling gives Jun a golden watch, a relic from his father. Looking at the oldfashioned watch, Jun wonders if he can become a reliable man.