Twilight is a rather ordinary little grey pony but when Lauren whispers the magic words, he turns into a beautiful snow-white unicorn. In this thirteenth exciting adventure Lauren and Twilight make an intrepid journey to the land of Arcardia in order to save their pony friend Shadow from a mystery virus.

A new adventure starring Lauren and her magical pony, Twilight who turns into a beautiful, snow-white unicorn when Lauren says the magic words. There's great excitement at the stables - a beautiful mare called Apple has just had a foal! The new foal is gorgeous and seems to be watching Lauren with a very wise look in his huge eyes. Lauren's excitement is spoiled when snooty Jade Roberts turns up. Jade goes to Lauren's school and used to be Twilight's owner but she sold him because he was too quiet and dull. Lauren, of course, knows better... That night Lauren and Twilight visit the foal in secret. Suddenly Twilight hears a noise and they find Jade up to no good. Apple, fiercely protective of her foal, is frightened and angry at Jade's intrusion. Even though she doesn't like Jade, Lauren knows she has to do something to help. Lauren and Twilight make a daring rescue to save Jade who has to admit that she may have been wrong about Twilight after all. Later, Lauren and Twilight discover the reason for Apple's over-protectiveness - that maybe, just maybe, Currant is a new unicorn, but they'll have to wait at least a year to find out...

Lauren does not believe in ghosts, but there is definitely something spooky going on down by the creek and one night, as Lauren and Twilight, her magical unicorn, fly over the woods near the scary tree house, they make a surprising discovery.

No.12 in the highly popular My Secret Unicorn series, featuring Lauren and her magical pony, Twilight. Lauren and Twilight are delighted to learn that Currant, the new foal at Orchard Stables, is also a unicorn, and that Lauren's friend Grace is his special unicorn friend. Now they can all have fun together. But Currant soon realises being a unicorn is not as easy as he thinks, particularly when it comes to flying. Currant needs lots of help and, luckily, Lauren and Twilight know just what to do.

Lauren and Twilight are very busy using magic to help Lauren's school friends sort out their problems. But one day Twilight falls sick with a mysterious illness. Lauren is desperately worried but the vet can find nothing wrong. Soon Lauren realises that it must be something to do with Twilight in his unicorn-form, and she discovers that using his magic for trivial deeds has been sapping all of his strength. Then Lauren's little brother Max goes missing, and although Twilight is still very poorly he summons every last bit of his power to help Lauren to rescue Max from danger.

Lauren's pony, Twilight, turns into a beautiful unicorn when she says the magic words, and together they have some amazing adventures. They really are the best of friends, but now Twilight has a secret that he simply cannot share - not even with Lauren - because it would mean leaving her forever. Twilight has been chosen by the Elders to return to Arcadia to watch over other young unicorns and help them develop their magic. It's a huge honour, but Twilight can't bear the thought of leaving Lauren. Lauren notices that Twilight is very quiet, and is sure that something is seriously wrong when Twilight's magic powers begin to fail. Finally, after a daring rescue, the Elders decide that Lauren and Twilight make a very special team and that Twilight should stay after all. And Lauren and Twilight promise that they won't keep secrets from each other ever again.

Twilight is lauren's pony, and they share a secret. When Lauren says the magic words, Twilight turns into a beautiful unicorn.