After their infant daughter received a heart transplant to save her from the same condition that their son died of as a newborn, Cathy and Bill Grinnan made a promise that they would do whatever they could to educate others about heart disease. Despite their personal tragedies, the Grinnan family became crusaders for heart disease research and treatment. Now it's time for someone to give back to them.

For the past 25 years, Consuela Mackey has tirelessly helped those living with disabilities by providing them with job training, individualized training in personal care and education on workplace etiquette. Since she has devoted most of her life to helping others, it was long overdue for something extremely nice to be done for her. When the team from "Extreme Makeover: Home Edition" came to Consuela's house in Granada Hills, California, they were able to give something back to an individual who has sacrificed so much for her community.

In this episode, a Jamaica Queens, New York family finally get their dream house -- two years after a contractor left them without a roof over their heads. With a house rendered unfit for habitation, Lucy Ali and her 12-year-old adopted sons, Paul and Kuran, had been living as urban refugees, hop-scotching from hotel to hotel, to relatives' couches and to a homeless shelter. "Extreme Makeover: Home Edition" brings the Ali house back to life when the design team and over 150 workers rebuild it.