Dipper Pines sits on a bed with Mabel Pines, both smiling as they play with a toy snake in a cluttered bedroom. The scene cuts to Dipper and Mabel walking with their family in a forest, then to a dark sequence where Bill Cipher appears behind Dipper, followed by a scene of Dipper confronting Bill Cipher in a dreamlike realm, and finally a sequence where Dipper stands before a glowing figure with a digital timer displaying "IMMINENT" and "21:07" in the background.