An astronaut becomes stranded on Mars after his team assume him dead, and must rely on his ingenuity to find a way to signal to Earth that he is alive.
Four young outsiders teleport to an alternate and dangerous universe which alters their physical form in shocking ways. The four must learn to harness their new abilities and work together to save Earth from a former friend turned enemy.
When an astronaut crash-lands back to Earth, a General places her in quarantine for rehabilitation and testing. As disturbing events unfold, she fears that something extraterrestrial has followed her home.