After a recent divorce, Mackenzie Granger opens her summer camp, Camp Little Otter, and tries to run it on her own. Financial struggles cause her to consider a buyout offer from Roger Shepard, owner of Camp Ridgefield, the resort across the lake. Mack's son, Buzz, is a counselor-in-training and promises a successful summer. Handyman Cole helps out, but appears interested in Mack more than her camp. Lead counselors Robbie Matthews and Sarah Brennen continue their annual summer romance.

It's Valentine's Day in July, with Valentine-grams and a carnival. Mack must give Roger a private tour of Little Otter, when he wins a raffle. On the tour, they argue, flirt, and eventually succumb to their mutual attraction.

It's the annual CIT Parents' Weekend. Mack must deal with Zoe's high maintenance mother and Buzz, who doesn't like her punishment for his drinking on his birthday. Roger inadvertently reveals Sarah's secret affair with Miguel. Kip has a health scare, revealing to the group that he has cancer.