Hopalong Rides Again

Buck Peters tasks Hopalong with bringing the Bar 20 cattle to Fort Hastings within ten days. The drive must pass through the Black Butte area, where rustlers previously stampeded the herd. Hopalong accepts the mission to save the ranch's cash flow and reputation.

Hopalong becomes smitten with Nora Blake, who lives in the Black Butte countryside, while Lucky is in love with Buck’s niece Laura. The romantic entanglements set up potential tensions as the cattle drive unfolds. The stage is set for personal loyalties to clash with the rustlers' danger.

Professor Hepburne drops by Bar 20 to have his horse reshod. Windy notices the crate of dynamite he carries, hinting at danger beneath the surface. Hopalong remains wary as the drive looms closer.

Buck relents and allows his nephew Artie to ride along. Hopalong assigns Artie to the chuck wagon with Windy, giving him a chance to prove himself. The pair prepares for a long, risky cattle trek.

As the herd moves through Black Butte, Hepburne detonates dynamite, triggering a catastrophic stampede. Hundreds of cattle are scattered and many rustlers pick off the stragglers. The chaos marks a brutal turn in the drive.

Windy and Artie dive under the chuck wagon to shelter from the blast as the stampede rages around them. Artie is badly hurt, but both manage to survive the immediate danger. The incident forces the drive to slow while they regroup.

A fragment of dynamite lands near Windy, confirming Hepburne as the rustler mastermind. Hopalong resolves to trap the rustlers and protect the herd. The pursuit of justice begins to take shape.

Hopalong designates Lucky to lead the cattle to Fort Hastings and return with the cash. The plan aims to separate the money from the herd to prevent a rustler ambush. Lucky accepts the responsibility under Hopalong's guidance.

Hopalong goes to Nora to share a moment and to distract Hepburne from the cash route. His visit prompts Hepburne to listen in, raising the stakes for the wrested plan. The danger of a successful ambush grows louder.

During a water run, Windy stumbles upon the rustlers and their cattle in a vulnerable spot. He realizes the scale of the threat and quickly returns to warn Hopalong and the others. The long drive now hinges on blocking the rustlers' next move.

While Windy is away, Artie seizes an opportunity and rides back to the Bar 20 ranch to fetch reinforcements. His action marks a turning point in rallying support against the rustlers. The extra manpower strengthens Hopalong's odds.

With Hopalong, Lucky, Windy and the ranch hands, the rustlers are driven off and the cattle drive regains its momentum. The defenders overpower Hepburne’s gang in a tense standoff along the route. The balance of power shifts decisively in favor of the Bar 20 crew.

Hepburne shoots a subordinate who complains, then is himself shot by that man. The shot triggers the dynamite stash, destroying Hepburne and ending his threat. Hopalong privately believes Nora will never learn her brother’s villainy.

In the end, good triumphs over evil as the ranch returns home with both cattle and cash. Nora remains unaware of her brother’s villainy, preserving her faith in her family and Hopalong’s good deeds. The Bar 20 community resumes its peaceful routine.