We're Captured by Caveman Smurfs!

When Blossom accidentally knocks Smurfette into a barrel of manure, she is so mortified that she asks Handy's help. The latter invents a time machine so she can go back and fix her blunder. But another blunder sends Blossom and Handy all the way back to prehistoric times, where a monkey steals their time travel cuckoo clock…