His New Mamma: The aging father of a farm lad thinks the boy is after dad's fiancée, so he banishes the lad. The young man heads to California where he drives a cab. Through a fare, he meets a lovely lassie. His work takes him to the beach, where he sees dad's fiancée with another man. The lad and his lassie follow the woman and try to prevent her from marrying yet another rich man. Will our farm boy and his sweetie stop injustice from happening again?