Like many other fairies from Pixie Hollow, Tinker Bell attends fairy camp on the mainland. When she attempts to go find some lost things, Vidia asks her if she's going to the human house, which isn't too far from camp. The question makes Tinker Bell curious and she eventually sneaks off. Vidia follows behind to watch over her. When Tink reaches the human house, she is amazed by their "horseless carriage". She takes the time to flitter around under the car, while Vidia tries to get her to leave.
Eventually they do, but on their way back to camp, Tink and Vidia stumble upon a fairy sized house made by Elizabeth "Lizzie"Griffiths, a human girl who wishes to meet a real fairy. Tinker Bell immediately heads in to investigate, despite Vidia's constant warnings to leave. Tink claims it to be perfectly safe, so Vidia uses her wind to slam the door in an attempt to give Tink a little scare but it unintentionally locks Tink inside.
When Lizzie begins to approach the house, Vidia tries to free Tink but it's no use. Lizzie discovers Tink inside the house and takes her to her home. She prepares to show her scientifically-minded father, Dr. Griffiths a busy and serious scientist, but upon witnessing all the butterflies he has pinned in display cases for research, she decides to keep Tink a secret. Meanwhile, Vidia rallies Rosetta, Iridessa, Fawn, Silvermist, Clank, and Bobble to rescue Tink. They try to sail on a stream which would take them straight to the Griffiths' house. But their ship goes over a waterfall however they are saved by Silvermist, who manipulates the water to create a mid-air stream.
While this does save the fairies' lives, their boat is wrecked. They continue on foot but upon crossing a mudbank, which Rosetta reluctantly crosses due to her fear of mud, Vidia gets stuck waist deep. While Clank and Bobble try to find something to pull her out, the other fairies are nearly run over by a car but are saved when Iridessa blinds the driver. Whom then vacates the car, giving the girls a chance to get Vidia out by grabbing onto the his shoelace. The boys return only to find the other fairies fearfully peaking out of the grass.
Back at the human house, Lizzie's reveals her fascination of fairies to Tink. Tink is flattered by the child's obsession, and since it's raining outside, Tink decides to teach her nearly everything about fairies. She tells her how light fairies make rainbows, how animal fairies paint butterflies, and much more. They record their information in a new research book given to Lizzie by her father. During this time, Tink and Lizzie have grown a great friendship, but after a while, the rain dies down, and Tink is able to return to camp. She Gives a sad Lizzy a hug and makes her way out but before she leaves, she watches Lizzie attempt to show her father the research.
Unfortunately, Dr. Griffiths is too busy fixing the house's leaks, as usual, to pay Lizzie any mind. Tink returns and decides to fix the leaks so Lizzie may spend more time with her father. After she does, she makes the choice to release a captive butterfly Dr. Griffiths was planning on showing to a group of scientists, which causes a stern and suspicious Dr. Griffiths to send Lizzie to her room.
Meanwhile Vidia confess to the rescue team that she slammed the door, causing Tinker Bell to get trapped in the makeshift house. Rosetta, Iridessa, Silvermist and Fawn comfort Vidia about the situation and inform her that it could've been worse without her presence.With Vidia's guilt now abolished, the fairies move on, with Clank and Bobble finding the house.
Back at the house Tink apologizes to Lizzie and shows her how to fly with pixie dust, Once they finally reach the human house, the others are attacked by the cat. Despite being an animal fairy, Fawn is unable to immediately tame the cat under pressure. A chase pursues before she is able to find catnip, eventually taming the cat.
Dr. Griffiths was furious when he enters Lizzie's room and Tink hides in the fairy house and he finds footprints on the ceiling, he sternly orders her to tell the truth and Lizzie tells him about Tink and shows him the research she and Tink did. They get into an argument and he begins to throw all her fairy drawings, and research book, into the trash. Upon seeing this, Tink loses her temper completely and the fairy reveals herself, telling the father off while doing so (though he only hears jingles when she talks).
The astonishing sight of a fairy prompts the scientist to capture Tink, but Vidia arrives and pushes her out the way. Vidia is then taken by Dr. Griffiths to London for research, but Lizzie and the fairies are able to convince him to think otherwise, which he does. Dr. Griffiths then apologizes to his daughter for not believing her. Vidia is freed, and she and Tink form a friendship. Lizzie and her father are now closer than ever.
THE END.
