The Zack Files

As the Season Finale, Zack's records were sent out the window when he participated in a fight with Vernon, and Zack lost his entire memory. Zack's friends must retrieve the Zack Files and tell him all of the most important Zack Files to give Zack a chance to retain all his memory. Clips of previous episodes in Season One and Season Two were viewed in attempt to get Zack to become himself again, and once he saw his record files that Vernon had retrieved to announce to Zack that he was one of Vernon's minions, his memory was restored.

When Zack was practising playing the guitar, he was given a chance to try on Spencer's interactive gloves which gives him a feeling of playing a guitar. Then the gloves began to go crazy, and Spencer was able to release it from Zack's clutches, and they discovered that Zack became an amazing guitar player but he can only play well in his room. When Cam sent Zack's guitar-playing video, it attracts a famous music star who is looking for a member that would replace him in his band. Zack's father gave Zack a new and better guitar while Spencer discovered that Zack was playing so well because of magnetic fields in his room. When this star arrives at Zack's house, he began treating Spencer extremely badly. Zack did not want to become a rock star but Cam kept on pushing him because of money. During the recording sessions, Zack's father came through the door, and disturbed them. Ricky Dallas (the famous star) went ballistic and told ""the old man"" to leave them alone. Daniel Greenburg told e

During the robot creation contest, Zack found out he was looking at something else when he put on a special kind of glasses that Spence was going to use for his robot. Spence's challenge was to win the contest with the robot's ability to ""burp"" the alphabet, and a big contender was Gwen, who made her robot play the violin. Zack discovered that someone was sabotaging Spence's robot. Zack had to wear the ridiculous glasses all day to see if the sabotager strikes again. Spence decides to stay beside the closet, which hold his robot to catch whoever is damaging his robot. The trio believed that Zack was seeing through Gwen's eyes with the glasses, and he was seeing Gwen destroying the robot. So is Gwen the dismantler?

During an election with Gwen, Cam and other candidates, Zack and Spencer did not know who to vote for. Spencer decided to try an experiment with Zack by putting him in a tub of water and see what Zack does during his sleep, and what kinds of interesting material is in his dreams. In his dreams, Zack visits a world where it was only black and white, and everyone was the lame, and the same. No one wanted to exaggerate anything, and Zack had done many things that were against the law, and Zack became a rebel. He refused to eat Mush for breakfast or lunch, he did not want to follow anybody's instructions and dress the way they did, and Gwen, Cam, and Spence tries to figure out how to make Zack one of them. Spencer and a young boy, who was thought to be a rebel (and admired Zack) helps Zack in his campaign in the election after they were convinced of Zack's Other World. Zack finds a red rose, and the smell of the rose made everyone happy, and now they were free, and they wanted to do

Zack started joining almost every club at Horace Hyde, and he becomes overworked when he had to attend every club and finish all his projects. When a new mirror enters the school, he discovered that another Zack had entered their dimension from the mirror. Zack Two worked on the projects for all the clubs, while Zack One did the leftovers. Zack Two began signing Zack up for even more clubs, and Spencer and Cam had to try and send Zack Two back, before Zack One had so many things on his schedule that he would kill himself.

Sarah ends her relationship with Zack. Zack discovers a sword in a stone, and pulls it out. Then Merlin appears, who is usually ""an old guy with the blue hat"", is now in the form of a teenager, and reveals that he was trapped in the stone and continued to grow younger instead of older. No one can see Merlin, except for Zack, and no one else could pull out the sword out of the stone except for Zack. Zack decides to ask for getting back together with Sarah, so Merlin grants him his wish if he completes his quest of bravery while Spencer is thrown all around while trying to obtain some evidence of the 2000-year-old wizard.

Zack develops super-human strength to save his father's life. But instead of going back to normal after his adrenaline cools down, Zack gets stronger. So strong he's dangerous!

One minute Cam is making fun of Zack, the next minute he is a frog! Spence and Zack must turn Cam back into a human before Vernon takes his place on the swim team.

When Daniel Greenburg accidentally buys Girl Power deodorant for Zack while shopping, and Zack uses it, he becomes a girl! Now, Vernon is flirting with Zack, while Gwen starts plucking his eyebrows. And even worse for Zack, Cam is going on a date with Sarah. Zack decides to find out how to change back into a boy after he gets some secret information from Gwen and Sarah.

Zack creates a comic book about his ears, because he did not like everyone saying that he had big ears. It turns out that Zack destroys the comic and everyone thinks that it was about Zack and Sarah, so Vernon goes to repair it and humiliated Zack by presenting in front of a large audience.

When Zack and his friends go on a camping trip, Zack's father decides to join them to give them tips. Zack, trying to get away from his father wanders into the woods with Spence and Cam. But they were suddenly zapped into another world, and they must try to find a way out.

When Zack, Cam, and Spence join to figure out more digits after the decimal for pi, they surf the net to check out information about a new rock star. But when Ms. Arlington arrives, and checks what they were doing, Zack lost himself in the bracelet on Arlington's wrist. Then he could not lie and told everything what the boys were doing, and telling the truth to everyone. Cam and Spence must get him back to normal before blabbers out information that would get them into more trouble.

Zack wanted to stay and work on his project with Spencer and Cam, so he tried to trick Floyd, by turning the clock handles back to a certain time but they were transported into the past where they meet a boy. When they returned to their own time, the boy from the past came with them. So now, Zack, Spencer, and Cam has to return the kid back to his time before it's too late.