Bail out the tub’s standing water into a plastic bucket. Set a plunger on top of the drain and depress it three to five times. The vacuum helps draw the plastic bag toward the drain’s opening.
Straighten a metal coat hanger, leaving the hook in place. Work the hook down the drain, rotating and manipulating it as you go until you grab the plastic bag.
Pull the metal coat hanger slowly from the drain. If you drop the plastic bag, reinsert the coat hanger and try again.
Run hot water down the drain for five minutes to break apart any foreign objects and hair that may have built up around the plastic bag.