KINSHASA, Democratic Republic of Congo -- If their circumstances break your heart, their unparalleled joy just might mend it.
"It's always so gratifying when you see a big smile on their face," said actor Patrick Warburton.
These children have been swept up in a chaotic city that is twice the size of Los Angeles, and trooped off to this forgotten corner of Kinshasa.
Kimbondo is one of the largest orphanages in the Democratic Republic of Congo.
There are more than 800 orphans here and the numbers continue to soar.
Everyday, more children are dropped off at the front gate, many of whom are severely disabled.
Their parents simply disappear into the night, never to be seen again.
Sadly, the children in the orphanage are having kids of their own. While spending time in the facility, we saw a 12-year-old who is already 6 months pregnant.
"When you come here. It's tough man. It's tough. Tough," said Serge Ibaka.
Medical attention is scarce and they have very little food or clean water.
"Today in Africa, 5,000 children [worldwide] will die because they don't have clean water," said Ken Surritte, founder of WATERisLIFE.
These orphans cherish visits from strangers. Those visits never seem long enough.
When the sun slants though the bamboo, it's time for this convoy of compassion to retreat and the children come running.
Their eyes seem to say "hold me."
"They just want to be touched," one volunteer said.
"I'm a wreck. But it's not about me, it's about loving on these kids and letting them know they are worthy of being loved," another added.
Serge Ibaka has his own story of hardship and endurance.
"There are many orphanages around the world but this one really touched his heart," said Bill Horn, the founder of Pros for Africa.
The gentle giant is determined to give them something better.
"They love me. I love them too. That's why I'm here," said Ibaka.
Ibaka comes to bring much-needed supplies, attention and hope to hundreds of parentless children.