For Hank, his relationship with Abby has been storybook-quality. But Abby wants marriage, which Hank doesn't seem to be ready for. When Abby leaves him, Hank is crushed. Even worse, Abby's departure seemingly triggers the arrival of an unseen monster that claws at Hank's front door at night. As the nocturnal threat intensifies, Hank must figure out how to save his relationship but also himself.