Needing money for this week's payment, the kids throw a yard sale. It's a success, but a miscommunication causes the toy that Lex stores their KidDING! money in to be sold. The kids have to find the buyer before Tedward comes to collect his payment.
Smart and sarcastic Lex, tough and confident Presley, and their quirky friend Munchy find themselves in a sticky situation after an accidental mishap destroys a boat belonging to Munchy's dad Principal Tedward. Forced to come up with creative ways to earn money to pay for the damages, the best friends enlist the help of Presley's tech-savvy younger brother Fisher to create an app called "Kid-DING" to connect with people looking for help with small jobs. With Munchy's bossy older brother Jaget making sure they keep up with the payments, the three friends must do any jobs that come their way no matter how crazy they are.