Grey's Anatomy Season 12 Episode 20 Promo

Grey's tackles a major social issue when a young boy is brought in after being accidentally shot by a friend. Meanwhile, Arizona and Callie's relationship becomes a lot less amiable when Callie decides to move to New York with Sophia. 

You'll want to watch this promo ASAP so you can start drafting your position for the inevitable comment wars that come with an episode focused on the gun debate. 

Grey's Anatomy Season 12 Episode 20 will have the doctors going back on forth on what some see as a public health crisis and other's view as an issue of personal liberty.

How will Alex and Jo's differing standpoints impact their relationship?

Will this be the proverbial last straw, or will one of them sway the other on the contentious issue?

But fear not, auditions for CNN debates won't be the only thing to talk about! April and Jackson may be working out their custody issues, but Callie is about to get an unpleasant surprise from her ex.

With Arizona lawyered up, the ball will be in Dr. Torres' court.

Will she fight back, or back down when forced to really think about her decision?

We'll have to wait until April 21st to get our answers, but in the meantime, you can dissect the promo trailer.

Previous episodes are available when you watch Grey's Anatomy online so that you can be caught up (or obsessively dissect every line for clues).