Family faces 'Shark Tank' to sell their father's invention

Each "shark" has invested in the Cup Board Pro, which was created by Keith Young, a firefighter who died of cancer in 2018.
2:34 | 02/27/20

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Transcript for Family faces 'Shark Tank' to sell their father's invention
Finally tonight here, America strong. The children determined to get their father's dream made. Hi, sharks. My name is Kaylie young. I'm Christian young. I'm Keira young. We're the young family. Reporter: The young family. We remember them making that pitch on behalf of their father, a New York City firefighter who lost his fight with cancer, he was a first responder on 9/11. He wanted to go on "Shark tank" so his children showed up for Our business is -- The cup board pro. He passed away before he had the chance to come here. But we're here today to continue his legacy and make that dream a reality. Reporter: The cutting board with the cup you attach to it. He recorded his own pitch. Cup board pro is really, really simple to use. Going to take all these scraps, they're going to go right into the cup. Everything revolves around my kitchen. That's where the heart of a regular family's house is. Reporter: Those children have been through so much. Their mother, Beth, died of breast cancer and it was not long after they would learn their father had cancer, too. He was on hospice at the beginning of the year and he just passed away three months ago. Reporter: Everyone was moved. The sharks will never forget that moment. I can't even imagine the hurt and the devastation of losing two parents, but to their credit, they gained strength from that. Reporter: The children asking for a $100,000 investment. And then, the officer. All five sharks are going to come together -- Which is a rarity. Each one of us is going to contribute $20,000 and so, any profits that we earn from our 20%, we're going to contribute to whatever charity your dad supported for firemen that have been sick from 9/11. Oh, my gosh. What do you guys think? That's our offer. It's a deal. Reporter: After that deal, they have checked in with us along the way. Hi, David! This is Kaylie. And Keira young. Christian is at school right now. Reporter: Their father's idea taking off. The amount of love and support that we've received from everyone has been so incredible and we are just so grateful. Reporter: And tonight, we've learned that they have partnered with William sonoma, manufacturing the cup board pro in superior, Wisconsin. Workers on the line. And just listen to this. William sonoma reported that it is the fastest selling and most popular cutting board in the history of William sonoma. There's always angels with us. We feel our parents with us every day. No question. We love those children. Their story and so many others on a "20/20" woman: The deadly Corona virus officially hitting the us. Man: The markets are plunging

This transcript has been automatically generated and may not be 100% accurate.

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