When Blake Underwood's mother needed a kidney transplant he offered her one of his. But he wasn't a match.
On the other side of the USA, Jay Matuska was also waiting for a kidney transplant - and he was a match with Blake.
But Jay's new bride Jackie Sitkowski happened to be a match for Blake's morther.
So the kidneys swapped families and both got to celebrate a Christmas they feared they'd never see.
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