Dudley says he saw a ghost in the museum, but Ridley isn't so sure. Nuki wants to live with other mammoths but has a tough time fitting in with the herd.
Ridley learns to accept a helping hand during a desert journey with a statue. The Eyes make sure the moles don't lose their home to Mr. Peabody's plans.
Ridley and pals suit up in astronaut gear to find a lost exhibit in outer space. The Eyes must keep quiet while looking for a drum-loving mouse friend.
Peaches learns to ask for back-up during a mission in space. Strange things start to happen when Mr. Peabody and Lonny try on masks from a new exhibit.
Ridley goes treasure hunting in an old mine to save her family's tree house. Ridley and her mom try to find a new home for the museum's greeting robot.