A Dallas, Texas, real-estate broker's pitch leads to a battle of billionaires about his business model for a technology that makes house hunting more convenient; an impressive 10-year-old kidpreneur from Broomfield, Colorado, created a lemonade-stand business to help other kids start their own businesses while having fun and making money; fueled by her pursuit of the American dream, a mother from Allen, Texas, designs Made in America multi-functional covers for infant car seats; and the third "Shark Tank" tryout was the charm for a tenacious man from Austin, Texas, to get the chance to pitch the Sharks his Korean BBQ fusion restaurant food-truck business. Also, a follow-up with Michael Doyle and Thomas "Drew" Mitchell from Chicago, Illinois, and their weekend rental-home business, Rent Like a Champion, which Mark Cuban and Chris Sacca invested in during season seven.