When Tina receives unexpected news, Calvin, Dave and Gemma encourage her to embrace a new chapter by taking a big leap of faith - literally - by learning to skydive. Also, Marty helps Grover create a "battle bot" for a school science competition.

A near-accident awakens Dave's sense of civic duty, prompting him to team up with Calvin to try to improve the safety of their community. Also, a trip to the county fair turns into a nerve-wracking adventure for Malcolm, Marty and Grover.