- Sakamoto Ryota is an unemployed 22 year old who lives with his mother. In the real world, there may be nothing special about him, but online, he's one of the world's top players of the combat game called Btooom. One day, he awakes in what appear to be a tropical island, though he has no memory of how or why he has come to be there. While wandering around, Ryota sees someone and calls out for help. The stranger responds by throwing a bomb at him, now Ryota realizes both that his life is in danger, and that he has somehow been trapped in a real-life version of his favorite game. Will Ryota be able to survive long enough to figure out how and why he ended up there?