Katara undressed, and started to brush her hair. Then she heard him again.
"Insolent boy! This slave of fashion basking in your glory! Ignorant fool! This brave young suitor, sharing in my triumph!" Katara stood up. "Angel! I hear you! Speak - I listen . . . stay by my side, guide me! Angel, my soul was weak - forgive me . . . enter at last, Master!"
"Flattering child, you shall know me, see why in shadow I hide! Look at your face in the mirror - I am there inside!" She looked in the mirror. There stood a handsome young man with a mask over the left side of his face. "Angel of Music! Guide and guardian! Grant to me your glory! Angel of Music! Hide no longer! Come to me, strange angel..."
"I am your Angel ... Come to me, Angel of Music ... " She began to walk towards the mirror.i
Aang went to open the door. It was locked! There was a man's voice in there! And Katara's too! He tried over and over to open the door, but each time failed.
i"Whose is that voice . . .? Who is that in there . . .?"
The mirror opened! The man walked to her, and he took her hand. She gasped. It was cold!
"I am your Angel of Music . . .Come to me, Angel of Music . . ." He began to lead her gently, through the mirror. She was entranced. She couldnt let go, couldnt look away. He closed the mirror and they disappeared.
Aang finally got the door opened. He ran inside. He looked everywhere. No trace of Katara, or the man. "Katara! Angel!"

Meanwhile...
He led her down spiraling steps into a strange lair of some sorts. There was candles everywhere. He helped her into a boat, which he began to use to cross an underground lake.
"In sleep he talked to me, in dreams he came . . . that voice which calls to me and speaks my name . . . And do I dream again? For now I find...the Phantom of Bending is there - inside my mind . . . "
"Bend once again with me our strange duet . . . My power over you grows stronger yet . . . And though you turn from me, to glance behind, the Phantom of Bending is there - inside your mind . . .
"Those who have seen your face draw back in fear . . . I am the mask you wear . . . "
"It's me they hear . . . "
"Your spirit and my bending, in one combined! The Phantom of Bending is there inside my mind . . . "
And there seemed to be voices inside her mind saying,
"He's there, the Phantom of Bending...Beware, the Phantom of Bending . . . "
"In all your fantasies, you always knew that man and mystery . . . "
". . . were both in you . . . "
"And in this labyrinth, where night is blind, the Phantom of Bending is there inside your mind . . . Bend, my Angel of Bending!"
"He's there, the Phantom of Bending . . ."
She began to Waterbend, which made the boat go faster. They finally hit land. He got out of the boat. He helped her out of the boat.
"I have brought you to the seat of sweet bending's throne . . . to this kingdom where all must pay homage to bending . . . You have come here, for one purpose, and one alone . . . Since the moment I first saw you bend, I have needed you with me, to serve me, to bend, for my bending . . . my bending . . . Night-time sharpens, heightens each sensation . . . Darkness stirs and wakes imagination . . . Silently the senses abandon their defences . . . Slowly, gently night unfurls its splendour . . . Grasp it, sense it - tremulous and tender . . . Turn your face away from the garish light of day, turn your thoughts away from cold, unfeeling light - and watch the bending of the night . . . Close your eyes and surrender to your darkest dreams! Purge your thoughts of the life you knew before! Close your eyes, let your spirit start to soar! And you'll live as you've never lived before . . . Softly, deftly, bending shall surround you . . . feel it, see it, closing in around you . . . Open up your mind, let your fantasies unwind, in this darkness which you know you cannot fight - the darkness of the bending of the night . . . Let your mind start a journey through a strange new world! Leave all thoughts of the world you knew before! Let your soul take you where you long to be! Only then can you belong to me . . . Floating, falling, sweet intoxication! Touch me, trust me savour each sensation! Let the dream begin, let your darker side give in to the power of the bending that I do - the power of the bending of the night . . . "

The whole time he is touching her, holding her, kissing her. She is entranced, and allows him, and even touches his mask briefly. He decides to show her something, and takes her to a curtain. He pulls back the curtain, there is a perfect life-like wax statue of her in a wedding dress. Upon seeing this, she freaks out and faints. He catches her in his arms and carries her to a bed. He lays her down, and touches her face.
"You alone can make my bending take flight. Help me make the bending of the night . . .
He kisses her, and then draws a curtain around her. He leaves her to sleep.