Cosmo Academy has set a test for ten of its applicants to survive on a spaceship for 2 months. But there is an eleventh member aboard.

A group of students from the Cosmo Academy are about to take their final exam: surviving for over fifty days in a derelict ship. But when they arrive, they discover that instead of ten students, there are eleven. One of them doesn't belong there.—Serdar Yegulalp