When uptight Deputy Marshal Scott Turner inherits Hooch, a giant unruly dog, his new pet destroys his apartment and seems dead set on destroying his career. Scott is desperate to get rid of Hooch, who seems to behave for everyone but him. But when a witness under Marshal protection is kidnapped, he realizes that the dog he never wanted may turn out to be the key to saving the day.

Scott and Hooch babysit a diplomat's daughter and wind up saving the Olympic Committee.

Scott hunts for a dangerous fugitive in the woods; Hooch discovers the suspect has a secret.

On the heels of getting captured in episode 111, Scott is desperate to escape and reunite with Hooch. With no way out, he realizes his only hope is to team up with Nuke, an angry pit bull who badly needs a friend. Laura rounds up every person and every dog she can find to rescue her brother, stop Walton, and pull off a daring rescue before it's too late.