A W5 team follows a Canadian doctor's harrowing return to Haiti, where he witnessed the impact of the Jan. 12 earthquake on a country he had spent 32 years helping. The resulting documentary, "Haiti's Armageddon," will air Saturday on CTV at 7 p.m. ET.

Dr. John Yates, of Oakville, Ont., has devoted much of his life to Haiti, and most recently as senior project officer for International Child Care Canada.

His daughter had married in Haiti, he has friends and relatives in the country, and locals had taken to calling him the "White Haitian."

Yates tended to the sick and injured at the ICC's Grace Children's Hospital since 1991. He had flown back to Canada just one day before the magnitude-7.0 earthquake ripped Port-au-Prince apart.

The doctor made plans for an immediate return, desperate to know what had become of the hospital and the Haitians he had cared for. The W5 team joined him, documenting his efforts to help in any way he could.

They travelled through the Dominican Republic first, stopping to pick up supplies, water, food, extra fuel and other needed items.

Yates quickly realized that humanitarian workers were overwhelmed by the widespread destruction and innumerable losses of human life. But he continued toward the hospital, hoping by some miracle that it had been spared major damage.

"This is the first documentary that looks very specifically at one person, one group, doing their own very small part to help Haiti," said W5 Executive Producer Anton Koschany.

"We've set out this year to be on top of more stories and provide the kind of in-depth coverage that W5 is known for and this is just one example of that kind of powerful journalism," he added.