When your parents get remarried it can take some time to get used to all the new things. The biggest challenge in Casey MacDonald and Derek Venturi’s lives are each other. They are both self-obsessed, individualistic, controlling, sub-species of the human race; aka eldest children. And not only do they need to share the same house, they now go to the same school! Tune in to see the take-no-prisoners fight as they both try to control their house, their school and their worlds! It may take some time for everyone to adjust to Life with Derek!