<P> The season follows the story of surgical residents, fellows, and attendings as they experience the difficulties of the competitive careers they have chosen . It is set in the surgical wing of the fictional Grey Sloan Memorial Hospital, located in Seattle, Washington . </P> <P> The season picks up right where it left off after the fire in the previous season finale . Grey - Sloan takes on a new, improved appearance after it is repaired of the damages from the fire . Meredith Grey (Ellen Pompeo) finds herself in another love triangle with Nathan Riggs (Martin Henderson) and his long - lost fiancée, Megan Hunt (Abigail Spencer), though she encourages Riggs to resume his relationship with Megan over her . Meredith performs a ground - breaking surgery on Megan, landing her a Harper Avery Award . Jackson Avery (Jesse Williams) and Maggie Pierce (Kelly McCreary) fiddle with the idea of a relationship after Jackson and April Kepner (Sarah Drew) decide to live apart . </P> <P> Teddy Altman (Kim Raver) returns to Seattle to assist with Megan's reappearance and notices the tension in Owen and Amelia's relationship . With the help of DeLuca's sister, visiting doctor Carina DeLuca (Stefania Spampinato), Amelia Shepherd (Caterina Scorsone) discovers she has a brain tumor that has been impairing her judgment for the last 10 years . After it is removed by her former professor Tom Koracick (Greg Germann), Amelia and Owen Hunt (Kevin McKidd) decide to end their marriage . Meanwhile, after Alex Karev (Justin Chambers) reveals to Jo Wilson (Camilla Luddington) that he tracked down her husband, Alex and Jo reconcile their relationship, with Jo declaring that she will divorce Paul (Matthew Morrison). </P> <P> A new class of interns is introduced, one of which has a history with Andrew DeLuca (Giacomo Gianniotti). Ben Warren (Jason George) joins to Fire Academy but has trouble telling his wife, Miranda Bailey (Chandra Wilson). Harper Avery (Chelcie Ross) threatens to pull funding from Grey - Sloan and fires Bailey as Chief, but he soon after passes away, reinstating Bailey in the position . After Eliza Minnick (Marika Domińczyk) is fired from Grey - Sloan, she ghosts Arizona Robbins (Jessica Capshaw), who subsequently begins dating Carina . Their relationship is short - lived, however, as Arizona inadvertently ends it while preparing for Sofia to return home from New York . Carina begins a sexual relationship with the newly single Owen . </P>

Grey's anatomy cast season 13 episode 14