"The Secret Mystery Prize" is the 52nd episode of Little Einsteins.
The team is in Japan, wanting to see whats the secret mystery prize there in Mt. Fuji. They know that they need the musical key to open it, but the key breaks into four pieces. Then, Big Jet hears them and goes to get the four pieces of the key to open the prize. Now, it is up to the team to get the four pieces of the key to become one so that they can open the secret mystery prize before Big Jet.
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