Private Porky and his bloodhound seek for a nazi spy whom they find by accidence. The spy attempts to deceive them, saying he's not the spy, but proves he is when he plants a bomb trying to bomb up a bridge. Porky and his bloodhound get it and in a comical sequence hand it over to each other. At the end, it comes to the spy to get it - and it shows to be a dud. The spy, frustrated, throws the bomb onto the ground - where it explodes and bombs him into heaven.