Xiao Lin and Chuan Yu are lesbian lovers who work in the soft porn industry. One day, a man hires them to act as his wife and daughter. However, the relationship among the three gradually grows tense.

Qi Bai has been seeing someone in her dreams recently. They keep going back to the past and they keep falling in love. In reality, Qi Bai is also wavering between one relationship and another. Dreams connect her past, present and future.

The hotel room as a place where everyone is a stranger. A place that is yours for just a moment. A temporarily intimate space entered by a maid in order to clean it while, if possible, not leaving a trace of her visit. Each episode of Stranger is set in such a place, and each is captured in one long take. Weaving together a series of episodic stories – some humorous and absurd, some poignant and mysterious – that all unfold within a seemingly confined space, Stranger explores the idea of home while being away from it, and sheds light on the distinctive yet universal experiences of isolation and loneliness.