Synopsis by Hal Erickson
The plot of Twenty-One is predicated on the fact that socialite Jimmy Mufferton (Bryant Washburn) is the exact double of prizefighter "Battling" Dave Carey (also Bryant Washburn). Upon attaining his 21st birthday, Jimmy comes into his family's vast fortune. Having always wanted to escape his hothouse existence, Jimmy uses a generous portion of his money to convince Carey to switch places with him. Carey eagerly accepts, having always aspired to big houses and fancy clothing. As for Jimmy, he not only realizes his life's dream of being a "regular guy," but he also straightens out the various messes within Carey's dysfunctional family. But Jimmy isn't quite prepared to take Carey's place in the boxing ring!