A reclusive novelist (Adam Scott) visits a remote Irish inn to scatter his parents' ashes when he becomes consumed by tales of an ancient witch who is haunting the honeymoon suite. Disturbing visions and a sudden disappearance soon draw him into a nightmarish battle with the darkest secrets of his past.

Science teacher Ryland Grace wakes up on a spaceship with no recollection of who he is or how he got there. As his memory returns, he begins to uncover his mission: solve the riddle of the mysterious substance causing the sun to die out. He must call on his scientific knowledge to save everything on Earth from extinction... but an unexpected friendship means he may not have to do it alone.