Credit: Video Still

Grey's Anatomy heads into its two-part Season 9 finale with Season 9, Episode 23: "Readiness Is All," and a major disaster is headed the hospital's way, as you can see in this sneak peek.

In this clip, Intern Shane complains that Bailey has put him to work sorting files, a menial task that makes him worry all the doctors think he's worthless. But Bailey shows a little of her old Nazi self when she makes it clear that she doesn't have time for his insecurities; they need to get the files ready to go just in case the power goes out.  

Looks like this storm could cause massive problems. And that means lots of drama for us to enjoy.

Here's the official synopsis of the episode:

The doctors of Grey Sloan Memorial Hospital prepare for a super storm heading towards Seattle; Owen’s desire to be a parent gets stronger as he becomes closer to Ethan; and one wrong move puts the lives of Meredith and her baby in jeopardy. Meanwhile, Jo looks to Alex for help in a moment of crisis, and one doctor gets the shock of her life.

Credit: YouTube Photo: Grey's Anatomy Season 9, Episode 23 Sneak Peek: Shane Upset (VIDEO)

Catch the next new episode of Grey’s Anatomy on Thursday, May 9, 2013, at 9 p.m. ET/PT on ABC.

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin.