After their counselor told them a story about spirits in the woods near their campsite, Ziggy and his friends get lost in that very place. Ziggy and his Black Dinosaur pals are excited about their overnight camping trip to Caesar's Creek State Park -- it was named after an ex-slave who later became a Shawnee chief! Their camping counselor is descended from Caesar, and she fills the campers' imaginations with intriguing but sometimes spooky stories...

From a map Ziggy and his friends discover an old tunnel that was once used as a safe haven by escaped slaves. While checking out the tunnel, the trap door gets stuck and the boys are forced to use the old, dark, damp tunnels that just may be haunted.

Ziggy, Jerome, Rashawn, and Rico are sure they will win the talent show and the prize money to fix up their clubhouse. A moral dilemma develops when they realize another contestant may need the prize money even more.

When his mother complains that all she gets in the mail are bills, Caillou decides to send her a letter to cheer her up.