[s5e22] What A Difference A Day Makes | AUTHENTIC | 2026 |

: As a wedding gift, Derek gives Meredith her first solo surgery—a successful colon surgery overseen by Richard Webber.

: Creator Shonda Rhimes noted that Denny's appearance in this episode was meant to represent "Death," which is why he wore black and spoke sparingly compared to previous appearances. [S5E22] What a Difference a Day Makes

While the wedding takes center stage, the hospital remains in chaos due to a tragic car crash involving college students on their way to graduation. : As a wedding gift, Derek gives Meredith

The episode's central plot twist occurs when Meredith and Derek decide to give their meticulously planned wedding to Izzie and Alex. : As a wedding gift

: After Derek and Bailey discover that Izzie has an inoperable brain tumor, the group decides to celebrate her life and love immediately.