The twins come back in Gravity falls after years , Mabel hopes to spend an happy summer with her old friends but something of terrible happens. Everything starts when Dipper disappears . In order to bring him back, Mabel will be forced to face the secrets and horror of Gravity falls. And when a certain demon appear, she will have to decide how much is she disposed to sacrifice .

Steven decides to bring his old friend Centipeetle back using his new healing powers, but he's about to have a big surprise ... After all the all Crystal monsters were once Gems . Now that his friends is back with such an unexpected appearance , Steven ,along with Connie ,will do his best to help her rediscovering her lost identity as a Gem and hide her from the Crystal Gems .