Saturdays find themselves in trouble when the caretaker of the spider cryptid called the Cacus has died. A recent abundance in cattle deaths brought attention to the Saturdays. The town sheriff tells them about the recent death of an old man. He never talked to anyone. The Saturdays check out a cave near the old man's house. It was littered with gold and jewels. It turns out that the old man was the caretaker and when he died, the spider was left to fend for itself. The Saturdays and the sheriff agree to use the money to feed the Cacus for the rest of its lifetime.