Hot and Cold Slippy's Dad insists he get rid of all his inventions to free up some space. Slippy can't bear to, so decides to store them on the dark side of Mercury. When he realizes that Mercury spins, turning the cold side into an astronomically hot one, the gang hurries to find a way to move the inventions before they melt. Slippy builds a huge umbrella to shade his inventions while Ella becomes stranded on a ledge when her scooter and space boots overheat. Will Slippy save his inventions or his best friend?

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