When the testimony of a crippled child sends a murder suspect to prison, a friend of the accused sets out to investigate the crime on his own.

A young, friendless soap bottle, content to stay in his hometown shower, realizes there is more to life outside the bathroom. As he embarks on a journey to discover the truth about his heritage and find meaning for his own life, a colorful cast of characters become intertwined and attempt to end Bob the Soap's good fortune...

Bob the Soap has disappeared and Soapville has been thrown into chaos and calamity. Desperate to save his home, a young freedom fighter soap bottle finds Bob, who is reluctant to help. Bob must decide whether to join his friend Beanie and save the world one last time, or continue living his life of solitude.

How soap cleans? Part of the Science Please! collection for children.