Officer Mike Ernster and his K9 partner Buzz are on the trail of an armed gang member who's been firing rounds in a residential area. They find the suspect - but he runs from the team. Ernster and Buzz have to stop him before he can get away. Plus, Officers Isaac Rinehart and Brady Harrison, together with their K9s Sarik and Sully, close in on a suspect wanted for a gang-oriented murder. The K9 unit leads the way as cops storm a house … and when armed suspects flee from the police, Officer Jeremy Ryan and his partner K9 Ranger are on hand to track down the weapon - but there's a surprise waiting for them. (thetvdb.com)