Hupo and the Doom LagoonHupo and the Doom Lagoon

"Hupo is off exploring with the Great Humdingo on his airship, but there's a stowaway on board who looks and seems very familiar. When they reach the Doom Lagoon, it becomes apparent that all is not as it seems with this unwelcome guest, and as fear itself becomes unleashed, it's going to take all of Hupo's bravery and kindness to rescue his beloved town from destruction once again"--