Another Gantz: The Conclusion of the Gantz Films

The last thing Kei remembers is the
train running over his body. Now he is
in a room filled with strangers, all
resurrected by the featureless black
sphere known only as the Gantz. But
their reprieve from death may only be
temporary, for unless they undertake
the brutal missions that the Gantz
assigns, none of them will live long
enough to leave the room. Is it a
game? A nightmare? All Kei knows is
that if they fail, they will die
again.