[Percy] Who's Thalia? [Grover] You're not the first half-blood I was sent to protect I should've told you, but I-I thought that if I did You'd never want me on this quest If you knew what a failure I am Ask Annabeth, she knows [Grover] There's a tree on the Hill Up on Half-Blood Hill That watches over us Silent and still And no one at camp is safe until We can see the tree on the Hill [Grover] This was way before I met you Quiron sent me to escort three half-bloods back to camp Two were runaways One was Annabeth The other was Luke The third was Thalia Tough girl, like her dad, Zeus [Percy] I-I thought I was the only kid of the Big Three gods [Grover] You are now We'd only made it back to camp, but I got nervous, we got lost and By the time we found the hill Something else found us [Grover] And there on the Hill Up on Half-Blood Hill A cold wind blew Dark and chill For nothing would slake its wrathful will We had to make a stand And maybe if I'd been a little bit braver Maybe if I stayed behind to fight But "maybe" doesn't let me go back and save her Maybe doesn't make it alright [Grover] Thalia saved us We only survived because she stayed to hold off the monsters She paid for her sacrifice with her life That's when Zeus showed up [Percy] He saved her, right? [Grover] It was too late for that As she died He turned her into a tree So she could stand protecting us, forever The way I couldn't do for her [Grover] There's a tree on the Hill Up on Half-Blood Hill That protects us all And always will And it's there reminding me Of all I failed to be The tree on the Hill