Steel Against the Sky

Rocky and Pete Evans are following in their father's footsteps by working on girders to build John Powers' bridge. Chuck, their brother, favors get-rich-quick schemes and tries to talk Rocky into financing a venture with Professor Samson. Rocky declines, focused on the job at hand.

Chuck brings Professor Samson to the family, and Pop Evans advances him $25. A lab is set up in the basement of the Evans home to test Samsonite, the Professor's touted invention. Tensions simmer as the business idea collides with the realities of construction.

Rocky becomes romantically involved with Helen Powers and invites her home for dinner. The brothers humorously vie for the bathroom before Helen's arrival.

Meanwhile, the Professor's experiments create small explosions in the Evans' house basement lab. The disruptive tests add danger to the household and raise questions about Samsonite's practicality.

Chuck is enchanted with Helen and decides to work on the bridge with Rocky as his boss, shifting family dynamics toward rivalry and collaboration. The decision marks a turning point as the brothers attempt to combine their talents.

Rocky is attacked on the girders by a disgruntled employee, and Chuck rescues him, earning Helen's admiration. The rescue strengthens Chuck's place in the family and on the job.

With completion on time threatened by an approaching storm, the crew works around the clock to finish the job. The pressure of the deadline compounds tensions at the project site.

Rocky sees Chuck kissing Helen and erupts in fury, triggering a fierce quarrel between the brothers. Pop Evans is devastated by the rift and blames Helen for toying with the boys' feelings.

Helen tries to mend fences by visiting Pop's house and explaining herself, choosing to reject Chuck's advances to ease the tension. Her attempt highlights the strain within the family.

The storm arrives and creates a dangerous problem on the bridge, threatening the completion deadline. Crews work under difficult conditions to stabilize the structure as rain and wind lash the site.

Rocky and Pete climb the ice-covered girders to repair the damage, but Pete slips and falls into the icy water. The perilous climb tests their endurance and safety.

Chuck climbs to rescue his brother, and the peril rekindles their bond. The brothers forgive each other and move forward together on the project.

In the aftermath, Helen professes her love for Chuck, acknowledging the bond that survived the ordeal. Her confession helps heal the rift and sets the stage for the final union.

In the final scene, Chuck and Helen are married, bringing the family together and signaling a hopeful future. The wedding marks the culmination of the relationships rebuilt on trust and courage.