Cro learns what a lever is and tries to make good use of it however, Ogg doesn't like the invention and kicks him out of the group of neanderthals. Can Cro show them how useful the lever can be and gain their acceptance once again?
Big Red convinces Cro that he wants to help him play the violin for the marching band, but it's actually just a ploy to get close to Steamer so they can capture him for dinner. Will Cro see through the plan or will the wolves have baby mammoth for their luau?moreless
When Mike is having trouble throwing paper baskets, Phil tells him a story of when he, Cro and the others used levers, catapults to save that lives of Bobb and Steamer when they get trapped by a earthquake.
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