Grey's Anatomy (2005)

S7E20 White Wedding

With Callie and Arizona's wedding day nearing, the pair discovers that their much-anticipated celebration isn't unfolding as they had hoped. At the same time, Alex stirs envy among his fellow residents as he seems to be the frontrunner for Chief Resident. Meanwhile, Meredith and Derek reach a pivotal decision that will alter their lives significantly, and Dr. Perkins offers Teddy an enticing opportunity that she finds hard to resist.