Jake Borelli

Meredith has a patient whose family is celebrating Day of the Dead, making the doctors remember loved ones they have lost. Meanwhile, Richard shares unexpected news with Meredith about her father.

As fog begins to cover Seattle, the doctors must navigate through personal complications. Meredith and Alex attempt to save Gus, and Levi talks some sense into a struggling Nico.

Things do not go as planned at Alex and Jo's wedding. The stress from the past year has taken a toll on Bailey, making her re-evaluate some of her decisions.

The windstorm continues to blow through Seattle and the doctors are left scrambling to save their patients' lives, including Meredith who desperately needs to get to Cece for her heart transplant.

During presentations at the Innovation Prototypes Day, Arizona shares some cookies that, unbeknown to her, contain a special ingredient.

Amelia, Koracick and DeLuca perform a risky procedure to remove a young patient's brain tumour, while Meredith and Jo work with different polymers to try to salvage their project submission. Richard's AA sponsor is admitted to Grey Sloan with a DNR.