Despues de morir arrollados en las vias del metro, Korono Kei y Kato Masaku aparecen en una extrana habitacion en la que se encuentran otras personas que tambien han tenido algun tipo de accidente mortal. Este grupo esta compuesto por un profesor de primaria, dos yakuzas, un politico, otros dos jovenes y una chica que intento suicidarse. El unico mobiliario de la habitacion es una esfera negra la cual, al estar todos presentes, les proporciona trajes especiales, armamento de alto nivel tecnologico, y acto seguido les da la orden de buscar y cazar a distintos tipos de alienigenas. Para volver a sus vidas normales deben sobrevivir y conseguir suficientes puntos.
Episode 06: Lo consegui!! (All Right!) - After finding Kishimoto asleep at his door, Kurono has one lucky streak after the other. Eventually, Kishimoto asks if she can stay with him! Kato is, however, unaware of Kishimoto’s problems. Will she tell him? Meanwhile, everyone else has problems of their own...
Episode 05: Eso significa que aquella vez... (Then That Means, at That Time...) - Now that Kurono, Kato, and Kishimoto are alive again, they can return to their regular lives… or can they? What trouble awaits the three in the future? Are they really alive? And, can Kurono survive a fight with a school bully?
Episode 04: Que empiece el recuento de puntos (OK, Here Are Your Scores) - Not being able to shoot the alien, Kurono drops his gun. Thus, Nishi takes the points and finishes it. Nishi says that anyone still alive can return home fully recovered. Kurono and the girl look to Kato, who is near death. They try to wake him up so that he can return. Will they be successful, or will Kato become one more dead victim of the night?
Episode 03: Kei-chan es genial (Kei, You're Awesome!) - With only three people left, the alien attacks Kato. Will Kato survive? And, can Kurono outrun an alien?!
Episode 02: No son humanos (They Aren't Human) - Kei Kurono is thrown into a deadly "game". Everyone goes off looking for the alien, while he, Masaru Kato, and the girl go off on their own trying to find a way home. What kind of game is this? And, by the end will they all survive?
Episode 01: Ha amanecido un nuevo dia (It's the Beginning of a Brand New Day) - Kei Kurono: an apathetic, self-centered teenager is on his way home when he crosses paths with Masaru Katou, an old childhood friend. When a homeless man accidentally falls onto the tracks of the subway, the pair risk their lives to help the man to the platform. But the pair are gruesomely killed by the express train and are transported to a condominium with other people who have recently died: a school teacher, a politician, a regular joe, two yakuza gang members and a mysterious young 12th-Grader named Nishi. Before long an attractive, naked girl (Kei Kishimoto) is teleported to the room and is almost the victim of rape from one of the yakuzas, before Katou stops them. Then music starts coming from the mysterious black ball...
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