In the year 2098 you and your entire grade from your school left on a ginormous budget intergalactic transport ship to take a trip to earth from the exo-planet you were born on, at first it was all going well, but after the ship had been damaged by unknown means and the mysterious murder of the only 2 adults on the ship things almost instantly spiraled out of control as Kazuma accidentally revealed that no help was coming, the ship only had 50 hours worth of oxygen left, and there was going to only be a single survivor as there was only one cryo-pod on the entire ship. After the first bloodshed from two girls getting into a fight and one killing the other in a panic, now it was a giant battle royale across the entire ship to be the sole survivor.