Jack Morgan (played by Kirk Cameron) is a dog therapist who was once famous for being able to read his dog's mind. Although he cannot read the minds of other dogs, he continues to operate a canine mind-reading business without admitting his limitation to customers. A session with Mr. Mooney (played by Tom McCleister) and his wife goes poorly—the dog doesn’t reveal its thoughts, leaving Mr. Mooney frustrated and threatening to shut the business down. After the session, a wealthy man named Clyde Windsor brings his dog, Lucky (played by Bogus), and Jack is stunned when he can “hear” Lucky’s thoughts. Lucky makes it clear that three people living with him are troubling him, and Jack senses a deeper unease.
Two weeks later, the city shuts down Jack’s operation. Around the same time, Windsor dies, and his will lays out a surprising clause: Lucky, not Windsor, is to inherit the fortune and the grand mansion. Windsor’s will appoints Jack as Lucky’s trustee, with a trust fund of about $64 million. This arrangement forces Windsor’s niece Margaret (played by Christine Healy), and nephews Lyle (played by John de Lancie) and Reuben (played by Taylor Negron) to leave the estate. The relatives hire the greedy lawyer Mr. Phister (played by Granville Van Dusen) to pursue a courtroom fight, hoping to seize control of the mansion and the money.
Jack moves into the mansion to fulfill the terms of the trust, and his presence oddly amplifies Lucky’s dog-like impulses. Lucky’s excitement triggers Jack’s ability to “become” Lucky, and the duo starts a series of lively escapades. To help Lucky cope with the loss of his former owner, Jack and Calvin Bridges (played by James Avery) take him to a local mall, where the shopping experience becomes chaotic as Jack’s mind briefly shifts into Lucky’s. In the pet store, a potential new life for Nicole Tyler (played by Jillian Berard)—who dreams of owning a puppy—intersects with the ongoing ordeal. Allison Kent, Windsor’s lawyer, isn’t present in the mall scene, but the drama continues to unfold as Lucky’s memories surface and his scent for food triggers further misadventures.
The legal battle intensifies at the courthouse when Jack demonstrates his deep connection to Lucky: he can identify objects and clues that Lucky himself can sense, proving their unique bond. Through Lucky’s thoughts, Jack uncovers a troubling possibility: Lyle Windsor may have poisoned his uncle. In a tense moment at the courthouse, Lyle pulls a gun, but Lucky acts to protect Jack, knocking Lyle over and leading to arrests that also involve Margaret and Reuben. Back at the mansion, Jack reveals to Allison and her daughter Nicole that he has bought all the dogs from the mall’s pet store at Lucky’s request, ensuring that a suitable companion receives a home. A new life begins for Nicole, who will get a puppy, and for Lucky, who gains a female canine companion as the mansion fills with canine residents while the estate settles into a wary peace.
Throughout, the story blends humor, family dynamics, and a mystery of loyalty and fraud, anchored by the bond between a man who can hear a dog’s thoughts and the animal who trusts him most.
