Milla Bound and Gagged 5

On her way home from school, Milla Automata helps an old hobo cross the road to their hobo camp but it turns out to be a trap! The old hobos easily overpower Milla and knock her out with chloroform. Then they strip her down to her g-string and tie her up!

The hobos tie Milla's legs apart so they can tickle her easily, and strap a mask containing a potent mix of hypnotic and aphrodisiac gas over her nose and mouth to keep her in a submissive state of sleepy arousal.

The old hobos couldn't read the instructions, so they are unaware that prolonged exposure to the gas will turn the victim into a hypnotised submissive slave permanently! Will Milla escape in time to finish her homework?