Captain Eva Renn's mission to the planet Kryos-Theta failed when her ship was pulled deep underground by a strange gravitational pull from the planet's surface. She woke up in a cavity resembling a living organ—its walls pulsating like a heart and constantly secreting a viscous fluid. Eva struggled to find a way out, but every movement only stimulated the "life" around her, tightening its grip. She began to believe that this cavity might be the "body" of a giant creature beneath the planet's surface.