Diane spent her after-school hours slaving for her aunt, helping her run the local boarding house. One night, while out for a walk to "get some air" she wandered to the train station and saw a man fall from a train. Rushing to his side, she finds he is very sick, and begs the station master to let her take him to the railroad shack. Diane nurses the man to health and learns that he is really Pete Harvey, former middleweight boxing champion, now down on his luck. With Diane's support, Pete trains and returns to the ring, winning his bouts. Pete leaves town to climb the boxing ladder, but when Diane hadn't heard from him, she went to visit him and finds Pete in a penthouse with Sherry Roberts, his former wife. Pete called often to appologize, but Diane refused to return his call until the night of the championship fight when she rushed to the arena only to find Pete knocked out and beaten. On the way to the dressing room, she passes Sherry who tells Diane that Pete is "no good", and she is leaving. Rushing in to see Pete, Pete takes Diane into his arms and tells her that without her the fight went out of him, but together, he'd always be a champ.
When Betty joined the flying club, she had no idea that she would fall for Dick Wilkins, the flight instructor, or be such a bad pilot. She was determined to learn to fly just to please Dick, and when his malaria flared up, Betty decided she had to fly him to the hospital in Evanston. Even though she crashed the plane, she ends up saving his life and getting a big kiss from Dick.
Lila has been planning on going to the dance with Buzz for months, but when he told her he needed to stay and work on his car for the big race competition, she rushed to accept to offer of Richard Rudolph, the wealthy boy who also asked her to the dance. Randolph sweeps her off her feet, then uses her to spy on Buzz since he wants to win the race himself. Torn between the two, it isn't until Buzz's car has an accident that Lila realize it's him she loves.
Warren Peters was a fireman by day, but that night he and Mary danced at the Senior prom and planned their future. Returning home, Mary was on cloud-9 until her mother rushed in to say that the house across the street was burning. Mary ran outside and overheard someone say that a fireman was trapped; all of her thoughts raced to Warren, worried that it was him. The next time she saw Warren, he begged him to quit his job as a fireman and when he refused she broke it off until she realized everyone lives with danger, and it is love she can't live without.