Article: There are normally 2 screws; 1 on each side of the grid. Unscrew them by inserting a screwdriver and twisting counterclockwise until you can pull them out. Set the screws aside in a safe place. Use a Phillips head screwdriver if the screws have a star-shaped slot, or a flathead screwdriver if they have a linear slot. Insert the tip of your screwdriver into a hole of the grid. Gently pry it up by using the screwdriver as a lever until you can grab the cover with your hands and remove it. You might be able to just lift the faceplate off with your hands, but using a screwdriver to pry it up will help in case it is stuck around the edges. Take a look at the drain cover to make sure it is still good. Toss it and replace it with a new one if it is rusted or damaged, or set it aside to reattach later if it looks fine. Pull it out and check to make sure there are no cracks or other damages. Set it aside to clean up for reinstallation if it looks good. If the drain body looks damaged, or you just want to replace it with a new one anyways to be sure, then keep the old one to bring to the hardware store with you when you go shopping so you can get the same model. Use a putty knife, flathead screwdriver, or some other kind of scraper to remove all the old caulk and any gunk that is in the parts of the drain. This will ensure that you get a tight seal when you put them back into place. Be careful not to gouge the threads or the face of the drain body and drainpipe as you scrape them clean. They need to be completely clean and undamaged to ensure a tight seal. Keep cleaning them with a wire brush if there is any debris left in them. If you find any damaged parts, you can take them with you to a home improvement store and look for replacements of the same model.

What is a summary?
Unscrew each of the screws to loosen the drain cover. Lift off the drain cover by prying it up with the tip of the screwdriver. Set the cover aside with the screws to reinstall later. Twist the shower drain body counterclockwise to unscrew it and remove it. Scrape away old caulk and any buildup from the drain body and drainpipe. Inspect the threads of the drain body and drain.