The Foy family prepares for the big July 4th weekend on Lake George in New York, and tension mounts as they get their menus and staff ready for the huge holiday crowds. If this weekend doesn't go right, they'll be paying for it for the rest of the summer. Jen worries about competitors stealing her top-secret new dessert, and Jesse might be in over his head with his pricey new lobster dish. Cate takes a challenging catering job on one of the summer's busiest days.