Young scientist Ada Twist will investigate how friendship, teamwork, and scientific advancement may benefit people.
In this season, Ada continues her adventures with her friends. Arthur's pet lizard disappears, and the team undertakes the task of bringing it back. The disappearance of ink causes everyone's confusion, while Iggy tries to make his kite fly high.
Before Ada helps create a medication to increase Iggy's self-confidence, everyone creates a game for Ada's autistic relative, and Rosie tries to win a car race.
In this season, the class of science lovers led by Iggy, Ada, and Rosie receives a new friend named Benny B, a boy obsessed with technology who comes with his robot dog. They go through exciting adventures together while studying.