The Doctor and Charley have to face up to the reality of their situation - Charley should have died when the R-101 airship crashed in the 1930s. The Time Lords intend to make the Doctor answer for his interference, but is that all they desire? In truth, their interest lies with Charley more than the Doctor, as she represents the key to accessing a domain outside of time and the possibility of the return of a hero of Gallifrey... or, perhaps, its final doom.
Another excellent audio adventure from Big Finish, 'Neverland' draws to a close a arc story around Charley and her true fate. Featuring Time Lords, Romana, Battle TARDIS and temporal warfare, this is a cracking tale. You would certainly benefit from listening to a few of the earlier adventures to get the most out of it - which is why I have given it 4 instead of 5 stars. You couldn't really call this a stand alone storyline!