Hajime Hinata and 15 other students join an academy. When Hajime enters the academy he walks into a room that is filled with binary code and a door. When he walks through the door, he enters a classroom filled with fifteen other students. They all introduce themselves, a robotic rabbit named Usami/Monomi/Magical Girl Usami appears and introduces herself as their teacher. After her introduction, she gets a magical wand and twirls it around, the ceiling and walls rip off to show a paradise beach. Afterwards on a beach, she asks them to earn 15 Friendship Fragments. Afterwards, Usami asks everyone to come back to the beach, but aa random storm shows up and a silhouette of Monokuma appears on a monitor. The silhouette asks the students to meet at a place on the island named Central Park. Monokuma introduces himself on the statue in Central Park and begins the killing game. He tells them the only way to escape the island successfully is to kill another student without getting caught by the other students. For the rest of the game, Hajime and his classmates attempt to debunk the mysteries and catch the murderers.