Casey finds her room in the new house too small to live in so she asks the parents to have Derek's room. It turns out in a battle between the two "step" siblings to determine who will have Derek's room.
- Michael Seater as Derek Venturi
- Ashley Leggat as Casey McDonald
- Jordan Todosey as Lizzie McDonald
- Daniel Magder as Edwin Venturi
- Ariel Waller as Marti Venturi
- Joy Tanner as Nora McDonald
- John Ralston as George Venturi
- This is the series premiere.