Returning to camp, the campers find some changes around them.
Emma, Ravi, and Zuri Ross return to Camp Kikiwaka, only to find that the camp's owner, Gladys, has run away with the insurance money after Grizzly and Woodchuck cabins were destroyed at the end of the past summer. The Ross siblings are rejoined by cheerful country girl Lou, and get three new campers: Finn, who is Lou's cousin; Matteo, who can find danger in a situation and doesn't want to be at Camp Kikiwaka; and Destiny, a girl that spent her child on the pageant circuit and is used to getting her way. They all need to work together to help raise money to rebuild Woodchuck and Grizzly cabins, especially the Ross siblings who will need to reach into their parents' deep pockets to help raise funds.
Now that the Ross siblings are officially the new owners of Camp Kikiwaka, they have to decide which one of them will actually be in charge of the camp.
When Lou comes to a decision that the campers should develop their public speaking skills more through practice, Matteo and Destiny notice Finn's apprehension towards public speaking and attempt to help him overcome his strong fear.
Ravi attempts to use hypnosis as a method to help Matteo overcome his fears, but his sudden newfound sense of confidence could cause problems for him.
When Matteo and Finn tell Ravi about their frustrations with him spying on people, Ravi begins using a drone as a new method of spying.
Emma comes up with a plan to bolster camp unity by giving everybody's cell phones back to them and using her newly developed Campstagram app.
The Ross children are determined to make the upcoming Kikiwaka lobster festival one of the best that has ever been done before, but a series of unfortunate events befall the campers and the event soon becomes a total disaster.
Matteo and Finn come across a strange collection of bones and suspect they are from a new species; they set a trap for the creature and want credit for their new discovery.
Finn, Matteo and Destiny fix up an old car as a present for Lou's 10-year anniversary at Camp Kikiwaka; Emma, Ravi and Zuri decide to throw Lou a surprise party.
The counselors clean out the storage room and find a fortuneteller machine that reveals something important will go missing and a sister will betray another sister.
Everyone prepares for the upcoming camp tournament, the Kikiwaka Cup; Zuri, captain of the campers team, is confident that her group will finally beat the counselors.
When Zuri decides to host a beauty pageant at Camp Kikiwaka, Destiny is very excited but Lou wants nothing to do with it.
Lou decides to go to college the following year, but her mother wants her to take over the family farm.
The children explore the booths at Camp Kikiwaka's Olde Moose Rump Days; after finding an old wooden box from Zuri's booth, the kids suddenly find themselves in the 1600s wearing Colonial garb.
The campers prepare to participate in a model rocket competition where they will face three rounds, including altitude, speed, and safety.