Mike and K.I.T.T. are trying to track down a stolen serum that maximizes the recipient's physicality before it gets into the wrong hands. With the help of the lab's research assistant, Billy learns some information about the serum that will help Mike when he takes on the now powerful thief. Meanwhile, Sarah is overwhelmed with her new duties and quickly learns how much work it will take to re-institute the Foundation for Law and Government. (imdb)