The Titans are officers at the studio lot for the 100th anniversary party of Warner Bros., which is going successful until Michigan J. Frog grabs the magical shield and broke it into pieces, destroying the studio. The Titans, with Daffy Duck from Looney Tunes, Gizmo from Gremlins, The Brain Gremlin from Gremlins 2: The New Batch and Yogi Bear from Hanna-Barbera search for the pieces of the magic shield in order to restore the studio, and defeat Michigan J. Frog.

After the Titans get shrunken by Mumbo's magic, they must scale a Christmas tree to prevent him from ruining their Christmas.