When JoJo's friend Jacob and his baking partner, Louis, get invited to a fancy beach resort for a cake contest, JoJo volunteers to come cheer them on. With Grace, Miley, and Kyra in tow, the whole Siwa squad will be together! Best of all, the contest is even going to be on TV! While the girls are tossing frisbees on the sand and baking in the sun, the boys will be baking up their masterpiece.
But winning isn't easy. When the boys' cake turns out to be a literal flop (it doesn't rise!) just moments before the show is set to air, JoJo and the gang have to get creative. There's no time for another cake, but there sure is plenty of ice cream around--it's a beach, after all. All that brain freeze gives JoJo a genius idea: Jacob and Louis can make her very favorite kind of cake . . . an ice cream cake!
The kids think they have the competition in the bag, but there's one thing they're forgetting--Ice cream melts in the sun. When things get messy, can JoJo and the Siwa Squad figure out a way to (milk)shake up the competition?