A young schoolgirl called Debbie wonders into an old curiosity shop. There, she stumbles on a game called "Wonders in Letterland", which, to her surprise, comes alive. Befriending the game's inhabitants, Debbie soon learns of the evil witch T-Bag, and soon finds herself charged with locating a series of missing letters....

Debbie must learn the name of a guard in order to advance to the next stage of her quest...

Debbie befriends a friendly skipper called McKipper, who nails himself a treasured find in the form of a golden S, only to throw it back into the sea. Debbie and McSkipper embark on a search beneath the waves and encounter T-Bag and Seraphina the Seasprite...

Debbie teams up with archaeologist Indiana Inkspot to search fro the golden treasure of the inkers as well as the next missing letter

Debbie and Polar Pete are presented with a problem when T-Bag locks the letter P deep within an icy prison

Debbie embarks on a treasure hunt when her letters are taken by the pirate Rascally Roger...

Debbie and T-Shirt arrive in the land of V, where they come face to face with a vampire, and T-Shirt feels the power of the sleeping violets. T-Bag takes action and disguises herself as T-Shirt in a bid to seize Debbie's letters...

Debbie helps the elderly Fife O'Clock get his clock working again...

T-Bag, Debbie and T-Shirt arrive in the final zone of the Letterland game, where they must make a melancholy emperor laugh in order to attain his gold necklace..

Debbie and T-Shirt race back to the beginning of the game, but find that T-Bag has a surprise up her sleeve that puts things in her favor. Can Debbie unravel the secret of the chest?

Both Debbie and T-Shirt find themselves once again crossing paths with T-Bag, who has now taken residence in a story book. To ensure she cannot be destroyed, T-Bag brings a halt to time. Debbie must now embark on a quest to locate the silver numbers and restore the town clock to working order in order for all the stories in the book to end, and bring about T-Bag's defeat...

Debbie befriends a dashing Prince searching for his ideal Princess. T-Bag discovers the silver shoes the Prince has prepared for his bride contain silver numbers and plots to attain them...

As Debbie is aided by Bunty Badshot in searching for the number three, T-Bag targets Bunty's reclusive brother Ben, whose cricket bats carry the vital number

Debbie and junk collector Scrap Harry conjure forth a magic genie and attempt a wish for the number four, but the ancient genie is far too old to do magic. T-Bag manipulates Harry and the Genie into delivering Debbie into her clutches...

Debbie is cohered into having her hair cut by Ali Barber, a down-on-his-luck barber in desperate need of customers. As payment for the trim, he takes all of the silver numbers Debbie has collected thus far, which are in turn taken by a powerful Sultan. Meanwhile, T-Bag runs into hair problems all of her own and takes her fury out on The Sultan...

When Debbie's Numbers are seized by good-natured Highwayman Dick Gherkin, T-Bag sets about preparing a trap for the theif..

Debbie is mistaken for a singer by radio pirate jockey Long John Sylvia and her assistant Jack and is recruited to sing for their radio station. The station soon catches the attention of T-Bag, who tries out her own voice on the airwaves, with disastrous results...

Debbie manipulates T-Bag into sending her and astrologist Professor Pockets to the moon, where they encounter aliens and musical rocks all en route to discovering the silver number eight....

When T-Bag strips T-Shirt of his powers, it falls to traveling entertaining Charlie Chuckles to teach him how to do a few fun magic tricks. Debbie encounters a depressed King who carries the number nine as a lucky charm. T-Bag demands to be entertained by the King and in desperation, the King asks Charlie Chuckles for help, but he refuses, insisting the King has not paid for any show before, but then the King promises him the number nine...

T-Bag disguises herself and tricks Debbie into giving her the silver numbers. With the numbers finally in her possesion, T-Bag sets about plotting their destruction. With T-Shirt her only hope, can Debbie locate the remainder of the missing numbers in time?

T-Bag takes up residence in a music box, using a new High-T plant to enhance her powers. When the cheerful Major Happy decides to play her a special tune using his Glockenspiel, T-Bag is nearly destroyed. in anger, she steals the Glockenspiel and scatters it's golden bells throughout the land. Debbie sets out on a quest to find them so Happy can use their power to vanquish T-Bag from the music box...

Debbie's quest takes her to an unbearably hot desert, where she befriends water merchant Omar Caraffe, whose bird cage carries one of the golden bells. T-Bag schemes to take the bell and makes use of T-Shirt's ventriloquism to trick Omar into letting his guard down. Meanwhile, Debbie discovers a bottle containing a powerful genie...

Debbie discovers that the crown of the soon-to-be-coronated Prince Ivan carries a golden bell...worse still, she discovers Ivan is the exact double of T-Shirt. T-Bag mistakes the obnoxious Ivan for T-Shirt and takes him back to the T-Room, whilst the real T-Shirt is manipulated by the evil Count Boris as part of his nefarious scheme to take over his kingdom via an abdication, but that depends on T-Shirt being successfully coronated as King...

Debbie is captured by Pirate Black Hearted Belle, who carries one of the golden bells around as an earring. Attempting to escape, Debbie ends up falling over and rendered with amnesia. Belle convinces Debbie that she is part of her pirate crew. Meanwhile, T-Bag and T-Shirt are visited by Mrs Merry, who proceeds to clean up the T-Room, T-Shirt takes a liking to her, whilst T-Bag greets her with frosty contempt...

Debbie allies herself with Bobby Jobsworth, an easily frightened explorer who is on a mission of mercy. Stumbling on an ancient tomb, Bobby is manipulated by T-Bag into persuading Debbie to enter the tomb, only for T-Bag to seal her inside. Meanwhile, T-Shirt attempts to celebrate Halloween...