On Sunday's episode of ABC's "Shark Tank," one pitch not only moved the sharks to tears, but spurred all five Sharks to collaborate on, rather than fight over, a deal. Walking into the Tank were three siblings from Long Island, New York: Kaley (24), Christian (20) and Keira Young (15) with their product, Cup Board Pro. The cutting board was created by their late father, Keith — a New York firefighter, firehouse chef and two-time "Chopped" star who died of cancer related to his time doing cleanup at Ground Zero in lower Manhattan after September 11, 2001, according to the Youngs. The Cup Board Pro is a bamboo cutting board with an attachable tray so food scraps can be brushed into it, and it has strategically placed grooves for meat or other juices to run into the tray, all for easy cleanup.

While the sharks were impressed with the quality and effectiveness of the cutting board, the entrepreneurs' personal story made an even bigger impact. For their pitch, the Youngs, who were seeking $100,000 for a 10 percent stake in their business, played a video of their father demonstrating the product. Keith had made the video for his "Shark Tank" audition tape before he died in March. And that wasn't the only tragedy the family had endured. Kaley told the investors that her father created the Cup Board Pro when she was in high school in 2010, but as he received the product's first prototypes, their mother, Beth King, was diagnosed with breast cancer. The business took a backseat and King died at age 47 in 2012. After her death, Keith was selected to be on Food Network's "Chopped," and went on to win — twice. That experience gave him the confidence to resume work on the Cup Board Pro, Kaley said. In December, Keith had 2,000 Cup Board Pros made to launch his business. But just as he received the final product, Keith was diagnosed with a 9/11-related cancer. He died in March. But the siblings were not willing to let their father's passion die with him. They took his inventory, launched a website and began selling the product, selling 300 boards by the taping of the show.