The residents are caught in a conflict between attending physicians. April has a challenging first day in her new role at the hospital.
Bailey must make a tough decision when an attending refuses to work with Eliza. Maggie's mother pays her a surprise visit and Stephanie gets pulled into Owen and Amelia's drama.
Richard, Jackson, April and Catherine tackle a tough trauma case intensified by hospital politics. Amelia finally faces her feelings about Owen. Meredith gets caught between Nathan and Alex.
Alex returns to the hospital and discovers a lot has changed since he left. Meanwhile, Jo has to make a difficult decision on a case.
Believing he is going to jail tomorrow, Alex makes a big decision about his future. While the hospital is overrun with victims of a building collapse, Richard demands answers from Bailey about Eliza's presence at Grey Sloan.