The Island of Destiny

You pull the piece of paper out of your pocket and say "Well, can you tell me anything about this?"

She glares at you and the piece of paper. She then snatches the paper from you and rips it up. She throws the shreds on the ground.

"Why did you rip that up?" you exclaim.

She turns her gaze forward and responds "It's not necessary anymore."

After another hour of hanging around in the net you come to a cave in the middle of the jungle. The girl drops the net holding you and you slowly crawl free. You stand up and she points a knife at you, gesturing to the cave.

"My master is in there," she says. "He wishes for you to go to him."
Not seeing any other option, you hesitantly go into the cave. It's pitch black inside. The girl doesn't follow you.

After about two minutes of walking in the darkness you see a fork in the tunnel. The tunnel to the left has a red glow at the end while the right tunnel has a blue glow at the end.

Which of these mysterious paths should you take?