Grandpa Clumsy is up to his old time travelling shenanigans again and has upset history by inadvertently bringing a butterfly back with him from prehistoric times. Who knew a single butterfly not flapping its wings would cause a chain reaction through time changing our modern day into the Stone Age! Helen needs to take matters into her own hands and rediscover all of civilizations greatest discoveries that never happened in The Clumsys 2: Butterfly Effect, a fun Hidden Object game.