Put together one very run-down house, a deserving family, several opinionated designers, seven days and what do you get? The answer is "Extreme Makeover: Home Edition."

Each episode of Extreme Makeover: Home Edition is self-contained and features a race against time on a project that would ordinarily take at least four months to achieve, involving a team of designers, contractors and several hundred workers who have just seven days to totally rebuild an entire house -- every single room, plus the exterior and landscaping.

The lives of the lucky families are forever changed when they learn that they've been selected to have their home walls moved, their floors replaced and even their facades radically changed. The result should be a decorator's delight...if it can be done in time.

Each episode begins with team leader Ty Pennington's now-famous "Good morning!" wake-up call, when he, along with the other designers, surprises the unsuspecting family with news that their home has been chosen to receive a makeover. Then viewers witness not only the unbelievable transformation of the house, but during the final and emotional reveal, they see how the home makeover has impacted the lives of the deserving families.