Daniel Harding is a distinguished member of the K-9 police unit. His partner and best friend is Ace, a police dog. When Ace is accused of mauling a suspect, an overzealous DA convinces police authorities that Ace should be euthanized.
| Actor | Role |
|---|---|
 Dean CainDaniel Harding | Daniel Harding |
 Britt McKillipJulia Harding | Julia Harding |
 Anne Marie DeLuiseLily Harding | Lily Harding |
 Burkely DuffieldKenny | Kenny |
 Mike DopudTorko | Torko |
 Peter KelamisDeputy D.A. Hilliard | Deputy D.A. Hilliard |
 Zak SantiagoOfficer Sanchez | Officer Sanchez |
 Keith DallasBoss Crowder | Boss Crowder |
 David Patrick GreenCapt. Porter | Capt. Porter |
 John ShawFrank Burgess | Frank Burgess |
 Matthew HarrisonJimmy Boder | Jimmy Boder |