Meredith finds herself having to side with either Alex or DeLuca during a difficult situation, but she doesn’t want to betray either of them. Meanwhile, Maggie reveals details about her personal life that cause a public stir, and Levi struggles with whether or not to tell his family about Nico.

Alex enlists Richard to help distract investors when he hears disturbing news about skeletons on the construction site grounds. Teddy tasks herself with creating original Halloween costumes for Allison and Leo.

Grey Sloan Memorial faces new pressures as Seattle Pres is overloaded, and Grey Sloan Memorial is now on surge capacity protocol. Meanwhile, Owen and Amelia are faced with one of the most controversial surgeries of their careers.

The attending surgeons and interns work together to solve a medical mystery when a college kid comes in with what first looks like food poisoning but has escalating and dire complications. Meanwhile, Jo spends her day off with Bailey.