It's time for the annual family lake trip! The kids waste no time jumping into the lake, swimming, boating and skiing! But what starts out as a perfect day soon turns to disaster when thunder strikes and the family has to head for the hills!

When you have 19 kids, it's hard to spend one-on-one time with any of them. But it's not impossible. Kelly makes a point to spend the day with Trace, while Gil and Josie take off for a father/daughter adventure. Afterward, the whole family gathers together as Addee and Ellie celebrate their birthdays with a joint swim party!