The novel opens with William “Scoob” Lamar and his grandmother, “G’ma,” entering Alabama. His full nickname is “Scoob-a-doob,” which makes him cringe. G’ma gave it to him when he watched Scooby-Doo as a kid but couldn’t pronounce the dog’s name. When his friend Shenice heard G’ma use it, she also started too, and it spread to school.

G’ma is driving a brand-new Winnebago. She invited Scoob to join her on a road trip and, seeing it as an excuse to get out of being grounded by his dad and miss a few days of school, he quickly agreed. He’d left the house with a note that he’d be with G’ma “for the night,” purposely leaving his phone behind. Scoob and his father planned on going on a trip, but right before they left, Scoob got in trouble at school, cancelling the trip.

Exploring the Winnebago—which G’ma has nicknamed “Senior” after Scoob’s late grandfather—Scoob is shocked to discover that G’ma sold her house to purchase the RV. He thinks about all his favorite places in her house that he will never see again. He doesn’t want to tell her that though because she is so excited about her new mobile home.