Professor Donald Satina (Robert Downey Jr.) also known as Professor Steam, is the founder and lead scientist of his home city, Bronzetopia, a city made entirely of steampunk. With the help of his assistant Tyrone Henders (Tom Holland), his inventions keep getting better and better by the day. But, one day, Professor Steam's older brother, Henson Satina (Nic Cage), plots to kill his brother and become the ruler of Bronzetopia, with the help of HIS assistant, Conner Liamsworth (Michael Cera). Professor Steam and Tyrone have to stop Henson and Conner before it's too late.
