Summer arrives, and Tom and Huck go hunting for buried treasure in a haunted house. After venturing upstairs they hear a noise below. Peering through holes in the floor, they see Injun Joe disguised as a deaf-mute Spaniard; Injun Joe and his companion plan to bury some stolen treasure of their own. From their hiding spot, Tom and Huck wriggle with delight at the prospect of digging it up. Huck begins to shadow Injun Joe nightly, watching for an opportunity to nab the gold. Meanwhile, Tom goes on a picnic to McDougal's Cave with Becky and their classmates.