Markiplier struggles as a child trying to keep his horrifying imagination--that his older brother has made him to believe--out of his bedroom. He must live through five nights, and also avoid the crucial interaction he'll encounter with the terrifying animatronics he has come to know and fear: Nightmare Bonnie, Nightmare Chica, Nightmare Foxy, Nightmare Plush mini-Freddy's, Nightmare Plush Springtrap, Golden Nightmare Freddy, and... Nightmare.