The protagonist in this book is a 15 year old girl, raised as the One Priestess to serve The Nameless Ones.
Although Ged does make an appearance, it's not so much needed to have read the first to appreciate this one (but recommended none the less).
Again it's a coming of age story, only this time someone else with a different, much different, story than Ged. It's really something else.
Although the last few chapters seem almost unneeded if you really want a HP (Harry Potter) kinda 'action' story, but they do have a great resolution of the main issues of: dealing with trauma, getting your head clear for the future after you've lost everything, being who you are, religious breaking, and the general 'going with the flow'.
A bit of wonky love, coming from Tenar, though I don't think she and Ged (who is presumably much older, late 20ies? 30ies? older? -- now that I think of it, wasn't it prolaimed in the first book that when he was archmage he would do great things in Atuan?.. hmmm yeah, that makes sense, so pretty old) get a love-love relation if they go on together in the next book.
I really liked this one better, as the descriptions of the lands were compact and practical to the story and theme. I really developed a imaginary complex of the Throne, Under-tombs an labyrinth. And was shocked to find out they were beautiful instead of just caves when revealed.
Shorter than the first, very readable, much better than HP :p
Going to read the last of the 'cycle' (there are more, but although enjoyable it's not really for my age anymore, though surprisingly mature themes/concepts explained very nicely for Young Adults) "The Farthest Shore" soontm !