It’s about 1 a.m. in the morning when Yuko receives a message on his cell phone. It’s an exchange student coming to pick up something she had left at his place. When she arrives, Yuko learns that she will be staying with him for a few days because of COVID-19. Since they have nothing better to do, they decide to make the most out of the situation and enjoy each other’s company while they are isolated from the outside world.