Six adorable puppies - three Collies and three Kelpies - embark on a journey to meet their new owners and compete for the title, Champion Muster Dog. Over twelve months, we watch as they navigate challenges and milestones.

As the puppies settle into their new homes and the five-month assessment approaches, the six handlers find themselves struggling to navigate personal challenges and training hurdles.

In a high-stakes showdown between Team Collie and Team Kelpie, our six participants and their pups step through the five-month assessment tasks. They grapple with training challenges and personal bonds as surprises unfold.

At the eight-month mark, handlers and their pups must transition from playful puppies to skilled working dogs. With mixed results in the assessment, the competition between Team Collie and Team Kelpie intensifies.

The mentors evaluate Team Collie and Team Kelpie during their ten-month assessments. With just two months remaining, the competition intensifies as everyone strives to perfect their skills for the final assessment.

With the twelve-month experiment now complete, the Australian Border Collie and Kelpie siblings reunite for the first time to face their final challenge.