The Doctor's daughter, Jenny, regenerates into a believix level fairy when her ship crashes outside of Red Fountain. Meanwhile, the TARDIS takes the 11th Doctor, Amy, and Rory into the heart of Cloud Tower. Will the Doctor and Jenny be reunited?

The TARDIS arrives in The Magical Dimension, and it's up to The 9th Doctor, Rose and Jack to save the fairies of Alfea from an old enemy once thought destroyed for good