Watch The Son of Rusty Full Movie Free Online 123Movies. The fourth film in Columbia's "Rusty" series is a lecture against gossiping. A young army veteran comes to town, and Danny and his friends learn that he had spent time in a military stockade for an infraction of a regulation. Danny's friends spread the story all over town. The seriousness of the minor infraction grows with each telling. As a sidebar, Rusty finds a mate and becomes a father.