[No.] 20B [Episode Name] Lunar Lily Pads [Air Date] February 20, 2006 [Description] 
When Jim finds floating lunar lily pads, he brings them home to show to his friends. When Jim finds out Eco isn't there, they realize that when Eco's collecting mushrooms, he accidentally parked the Hopper into a lunar mud puddle, and the vehicle is sinking, so Jim and his friends must figure out how to get the Hopper out of the puddle.