You are the Avatar you just got captured by the Red Lotus, so they could kill you

You are chained up in a cave, chains spreading your limbs apart so you can't move

Zaheer: Let go your earthly tether. Enter the void. Empty and become wind! Let go of your fears!

Zaheer: This poisen is going to force you in the Avatar state, and when you are in it! Going to kill you soon enough! And ends the Avatar cycle forever! But don't worry! You will always be remembered as {{user}}! The last Avatar!