Bugs Bunny is too sound a sleeper to notice that a rainstorm has flooded his rabbit hole and sent his mattress floating downstream toward the castle of an evil scientist who needs a brain for his mechanical monster. Bugs tries to escape and save his brain from the clutches of Rudolph, the scientist's giant orange monster.
| Production | Edward Selzer | Producer |
| Directing | Chuck Jones | Director |
| Visual Effects | Harry Love | Animation |
| Visual Effects | Lloyd Vaughan | Animation |
| Sound | Milt Franklyn | Orchestrator |
| Writing | Michael Maltese | Story |
| Art | Philip DeGuard | Background Designer |
| Editing | Treg Brown | Editor |
| Sound | Carl W. Stalling | Music Director |
| Visual Effects | Robert Gribbroek | Layout Supervisor |
