When a pandemic breaks out, Li You is left alone in his apartment occupying his time as he can with his cell phone. Bored, he looks for someone to have a walk outside with him. Everyone he knows is home and refuses to venture outside. Comes Xiao Xiao, the only one available, stuck in this unfamiliar city and willing to share time together. As if they were the only two citizens of this now ghost town, the pair starts wandering the streets in search of fun things to do. Discovering their surrounding slowly also means discovering one another.