A NASA capsule unexpectedly crashes back to Earth after being presumed lost in space almost fifty years ago. But its sudden return raises more questions than answers when it''s revealed that its crew are not only still alive, but haven''t aged since their launch. And so begins a far-reaching quest to uncover the mysteries and conspiracies surrounding their original mission, their disappearance and, ultimately, the future-altering reasons of why they''ve suddenly returned to Earth.