When Hayley's idol, cookbook author and TV personality Penelope Janice, invites her to participate in a Fourth of July celebrity cook-off at her seaside estate in Seal Harbor, Maine, Hayley couldn't be more flattered. She just hopes she can measure up. With a who's who of famous chefs whipping up their signature dishes, this holiday weekend has all the ingredients for a once-in-a-lifetime culinary experience.