Usami Otonashii and Byakuya Togami are from the same world, but they cannot be farther from each other. Forced into an arranged marriage before the two are sent to attend Hope's Peak Academy, there's an unspoken tension between the two. And when they realize Hope's Peak Academy is far from the school they thought it was, Usami has to figure out how to stay alive in a deadly game that leaves no room for hope.