Following on from the first series of Pirate Islands, The Lost Treasure of Fiji is essentially a computer game. The characters find themselves pulled into this alternate reality world, and must try to find their way back out.
When 9-year-old Marinette arrives in the countryside for the first time to live with her Grandpa Archie, Granny Minnie and Aunt Susan, she discovers an environment very different from the city. But with a personality like hers and the help of her new friends Jack, Betty and Johnny, she will enjoy the countryside as an immense playground, in which every inch is to be explored.
The shows featured the everyday adventures of a group of characters living on Pigeon Street, an area of flats and terraced housing in a British city, also home to several pigeons which appeared in each show but only occasionally featured in the plot. Characters included Clara the long distance lorry driver, her husband Hugo the chef, Mr Baskerville the detective, Mr Jupiter the astronomer, Mr Macadoo the petshop owner, and twins Molly and Polly, who were only distinguishable by the letter M and P on their jumpers.
Doodle Girl and her best friend, Pencil, explore the weird and wonderful pages of their sketchbook, and draw whatever they can to help the creations they meet along the way.