When she puts on the Locksley Amulet, Robyn is flung back to Sherwood Forest circa 1199. She learns that she must rescue Robin Hood and Marion from the wicked sorceress Brenan and that the consequences of her failure could be the disappearance of her very own family.

Robyn, in her efforts to discover the whereabouts of the King's Gifts, learns that the Amulet has a mind of its own and is as likely to get her into trouble as out of it. Finally, teaming up with William and the Young Outlaws, she tricks Brenan into telling them the location of two of the King's Gifts.

When Robyn has to complete her History Presentation/Report by the next day, her grandfather suddenly calls her to go to Sherwood Forest. There she must retrieve one of the King's Gifts, which was given to the King by Brenan. She meets up with Max, Tanya, and her other friends. Taking a camera along with her, she takes pictures to create a report on Sherwood Forest. During a feast, William tries to keep everyone from bringing the King's Gift to reveal it to the entire kingdom while Robyn with her friends infiltrate the little house to steal the King's feast, but was not able to get it because William could not hold back Brenan and she brought the gift back to the castle. Robyn's next plan was to switch the King's gift bag with another that contained a rock. The trick worked as the four danced around the kingdom after being introduced by William as minstrels, grabbing all the little pouches and juggling them until no one noticed that they switched one of them. But their plan was about

Robyn is helping her mother carry groceries into the house when the amulet falls from her pocket. Her mother picks it up and casually slips it around Robyn's neck. Robyn finds herself back in Sherwood with a bag full of groceries. She finds that her mother's purchases (plastic wrap, popcorn, bananas etc.) come in really handy when she has to escape from a trap set for her by Brenan.

Robyn borrows an old book from the librarian and promises to bring it back because she needs to read it to find more information. When she arrives in Sherwood, she discovers that Brenan has put William under a spell to only obey her mistress. Robyn believes that Tea can change William back, but she must become Brenan to provide the potion to William easily. With audio technology, Robyn's grandfather is able to mix Robyn's voice to sound like Brenan and place the speech inside an audio cassette to play when she returns to Sherwood. When William is about to drink it, the real Brenan bursts in, but on the cassette, Robyn had recorded that someone has dressed herself as the mistress in order to get at William. The tape again repeated that William should drink what is in the cup, and he does. It works and Brenan escapes, locking the door behind her to trap both of them. Robyn returns to the present time when Brenan returns with the King to see only William. William explains the situtati