Cooper is a stray dog on the streets of California, Beau, Maximus, & Romeo are 3 newcomers that want to join there pack. One day on a hunt all the stray dogs are abducted and taken to a lab where unusual tests are performed. The next they know they can shift between human and dog. Worst scenario is Cooper is a sub and goes through heat just like other females. The heat affects Romeo, Maximus, Beau & Saber but none are content on sharing and Cooper isn't on board with the acting like a sub thing. All they can say is this is going to be 1 bumpy ride