After visiting an outer space exhibit in a museum, Otter and Teddy decide they need a moon rock, and the only way to get one is to build a space ship and go get one.

Alex decides that the only safe place for the mystical pencil is the museum where his father works--but when Marvin borrows the pencil and begins to draw dinosaurs, things quickly get out of hand.

Penny goes on a class field trip to the museum and befriends a baby dinosaur.

When Mabel's parents leave town without warning, she isn't worried. They're spies, after all. But when her beloved Aunt Gertie is arrested for leading a smuggling ring, then her obnoxious uncle Frank and aunt Stella show up, demanding to be let into the family's private museum, things begin to look fishy. Especially since Mabel hasn't heard from her parents in days. Tackling a mystery like this one is what she has been training for her whole life....

Eric and his best friend Tommy decide to play a trick on his little sister Julieta, who believes she is going to see a dragon during the school trip to the museum. When Eric and Julieta go to the museum on a class trip, Eric and a friend try to make a dinosaur skeleton look like the dragon Julieta expects to see at the museum.

A New York-based art expert returns to her old stomping grounds, and into the arms of an old flame, when she is sent to help investigate a series of heists in Barcelona, Spain. Sandra Walker is dispatched by a wealthy client to retrieve a stolen painting that he had on loan to a Barcelona museum. She teams up with her ex-boyfriend, but when their investigation leads to a ruthless Russian mobster and her life is put in danger, Sandra's estranged husband...