A nightmare involving a maniac killer in a baby mask serves as inspiration for horror screenwriter Adam Lewis's new script. As more nightmares, visions, and real life terror being to challenge Adam's sanity, he finds himself in a desperate struggle to control his writing, his reality, and who will be Big Baby's next victim.

A young woman babysits her younger sister while her parents are gone.

After five years of peace following the events of the first season, Joel and Ellie's collective past catches up to them, drawing them into conflict with each other and a world even more dangerous and unpredictable than the one they left behind.