The episode begins in a warzone, where two marines are on their daily rounds with their K9, Dex. Dex is sniffing around for hidden explosives. They see two young kids playing soccer and one of them chases the ball and goes outside the boundary lines on to a mine field. Teddy asks the kid to stop and stay still. The ball rolls over a hidden bomb and it explodes. Teddy then asks Dex to sniff the other bombs and he carefully avoids the explosives and rescues the kid. His commends Teddy for his good job. At that moment, a fire is shot and Teddy falls dead on the ground. ..