Mack and the team prepare to host the annual mixer with Camp Ridgefield. Despite his inexperience, Buzz is pumped to Deejay the event and hopes it will score points with the ladies. Mack contemplates putting in a cell phone tower after she discovers Little Otter has lost a longtime guest family to the more modernized Camp Ridgefield. Kip' crush on Marina deepens and he helps her cope with the mean girls who continue to torment her, including Chloe, who kissed Kip during Capture the Flag. Meanwhile, Sarah gets a surprise visit from her swim coach, who makes an offer to keep her on the team...with some conditions.