One fateful night, Gumball vanishes without a trace. No Messages. Just Gone. After hopeless searches, the town of Elmore moves on quickly... But Darwin can't. Now he must take the lead in finding who took his brother; he teams up with Anais, Penny, and Carrie to uncover the truth behind his brother's disappearance and bring him home. But when the truth is unmasked, the Wattersons and their friends are forced into a fight bigger than any episode they were ever meant to survive...