 His wife Betsy becomes fed up with all the stress and files for divorce, and the professor's old rival (Professor Shelby) starts trying to woo her again.Brainard's experiments with a ray projector device are making it rain inside people's houses all over town.When Brainard feels threatened by Professor Shelby's attentions towards his wife, Brainaid uses it to make it rain insides Shelby's car to frighten the man.