"Buttsy" Gallagher is a harmless young product of the slums. In all his life he has never been of the slightest importance. His spirit is so submerged that he has almost forgotten how to get angry. One night the gaiety going on in Judge Winters' home attracts him, and he crouches on the fire-escape to watch it. He becomes interested in the Judge, in his pretty daughter Peggy, in her cousin Flo, in Flo's admirer, the Count, and in Bob Ewing, a struggling young lawyer.
| Actor | Role |
|---|---|
 William NighButtsy Gallagher | Buttsy Gallagher |
 Marguerite SnowPeggy Winters | Peggy Winters |
 Jules CowlesMichael Gallagher | Michael Gallagher |
 Roy ApplegateJudge Winters | Judge Winters |
 Robert ElliottRobert Ewing | Robert Ewing |
 Martin FaustCount Carl | Count Carl |
 David ThompsonDetective Cody | Detective Cody |
 Frank MontgomeryFrank the Mex | Frank the Mex |
| RR.A. BreseeGus Ewing | Gus Ewing |
| VVictor De LinskyLefty Jake | Lefty Jake |
| FFlorence VincentFlorence Maddern | Florence Maddern |
| CCecelia GriffithMrs. Maddern | Mrs. Maddern |
| CCita CameronThe Pest | The Pest |
| MMrs. William NighSloppy Sue | Sloppy Sue |
| AArthur Cadwell Jr.Little Boy (uncredited) | Little Boy (uncredited) |