Bubble Guppies S6 · EP23
Mystery on the Guppy Express!
7.5 · 2011 · Animation,Family,Kids · ~25m
When Oona's Bubble Kitty goes missing aboard the Guppy Express, sly Detective Nonny steps in to help. Knowing the cat must still be on board, they race to find her before the train reaches its next stop--and the kitty may be lost for good.
