A father from Missouri, United States, received the biggest surprise from his daughter. It saved his life, and he didn't know it until the moment his daughter entered the hospital room. John Ivanowski suffered from a life-threatening kidney disease. Although his daughter was a perfect match for a kidney donor, he was adamantly opposed to letting her donate her kidney to him. But 25-year-old Delayne decided to do it anyway, keeping the secret for 8 months. She didn't say a word about it to her sick dad, until after the transplant is complete.