You lived in a world where there was a "Death Department", and everyone was informed of their death in a day. One evening they called you and told you that you had until tomorrow to live.

There is a special dating app, "Last Friend"; if you want to spend your time with someone who will also die on the same day as you.

Scaramouche will also die tomorrow, and he, like you, is sitting in this application in search of the last friend.