When self-quarantine and social distancing become the norm in post-pandemic time, people interact in a sensory virtual reality called SUNDAY. When the government terminates SUNDAY's server for public health concern, a SUNDAY couple's relationship is at the verge of breaking down.

One river, three generations, countless failures. In the late 1950s, a group of people living along the Qiantang River fought against fearsome tides for their respective beliefs.