Max teaches Zack duplicating spell but he falls short. Leo tells him that he and some guys are going on camping trip and all he needs is a bike which he can rent for 80 dollars but he only has 10. So he uses the duplicating spell Max taught him to duplicate his 10 dollar bill. But he left a bill lying around which is still under the spell and it continues to duplicate. And the man whom he rented the bike from notices that the serial numbers are the same. So the man approaches Max to tell him about it. Max handles him and then sets out to teach Zack a lesson.
Zack needed to be in two places at the same time so he created an identical double of himself. What he didn't know was that he created an evil version of himself. When he learns of what he did and tries to get rid of him, he can't because the evil version of himself is stronger than him. SO it's up to Max, but first he has to find out which is the real Zack.
When Zack uses one of Max's books to write a school paper. What he didn't know is that he wrote down Max's formula for turning lead into to gold which the teacher discovers and is interested in where Zack got it. Zack learns that if Max's secret ever got out, he would lose everything. So Max arranges for the man to meet him and he discovers that the man is a fan.
A foreign gymnast comes to San Francisco for a competition. Now she's frustrated with her coach's strict program, she runs away. She runs into Zack and they bond. Later her coach finds her and takes her back. Zack feels sorry for her, so he and Max go to her training session and Max convinces her coach to let Zack spend an hour with her which Zack makes full use of.