Guy Fieri kicks off summer with a four-part tournament featuring popular summer rituals, games and grilled foods. Three of Guy's favorite Diners, Drive-ins and Dives chefs join him for a DDD-style backyard bash, turning classic diner dishes into backyard burgers and sides. Then the two highest-scoring chefs go toe-to-toe in a game of horseshoes -- lead by Guy and his son Hunter -- to determine how many whammy ingredients they must include in their grilled chicken dish. The chef with the highest combined score for both rounds wins $10,000 plus a spot in the big Summer Games finale.