Jean Michaut is a bargeman who lives near an old barge cemetery named "Bras-Mort". He is in love with Monique, the daughter of a wealthy boat owner. The girl returns his affection which goes against her family's class prejudices. Her family prove willing to do anything to separate the lovers, but, Monique will not buy in. On the contrary, she leaves her intolerant family to live with Jean among simple, more tolerant bargemen.