[PERCY, spoken]
Who's Thalia?

[GROVER, spoken]
You're not the first half-blood I was sent to protect. I should've told you, but I-I thought if I did, you'd never want me on this quest. If you knew what a failure I really am. Ask Annabeth, she knows.​

(sung)
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

(spoken)
This was way before I met you. Chiron 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, spoken]
But— I thought I was the only kid of the Big Three gods.​

[GROVER, spoken]
You are now. We'd almost made it back to camp, but I got nervous and we got lost and by the time we found the hill... something else found us.​

(sung)
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'd stayed behind to fight
But "maybe" doesn't let me go back and save her
"Maybe" doesn't make it alright

(spoken)
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, spoken]
He saved her... right?

[GROVER, spoken]
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.​​​

(sung)
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