The 'sibling' rivalry between Sacha and Russ escalates to the point where the trio threatens to break up. During a heated argument, they manage to trigger some of Toby's wicked science devices and as a result find they have swapped bodies. Now Russ is in Sacha's body and Sacha is in Russ'. They find themselves on a very sharp learning curve as each discovers what life is like for the other.