 Merchant seaman Joe Blake (Bill Williams), in love with Peggy Walters (Gloria Henry), takes the job of a rookie fireman in a big city department. His commander is strict-disciplinarian Fire Captain Jess Henshaw (Barton MacLane). Margie Williams (Marjorie Reynolds), the wife of fireman Harry Williams (John Ridgely) is in love with Henshaw and her husband has become insanely jealous. Fireman Greco (Richard Benedict), when fired by Henshaw, informs Williams that Henshaw has been seen with his wife. Henshaw has actually being seeing her to urge her not to leave Williams as he is about to promote him. During a large warehouse fire, Henshaw and Williams enter a smoke-filled building together and Williams is about to hit Henshaw with an axe, when a pile of burning crates falls on them.