Maggie gets a surprise visit from her mother at the hospital. Bailey has to make a difficult decision when one of the attendings refuses to work with Eliza, and Stephanie gets caught up in Owen and Amelia’s personal drama.

Diane Pierce returns to Grey Sloan, but Maggie is still in the dark as to why she’s really there. Owen and Amelia hash out their problems as they work a trauma case together, and Bailey tries to mend her relationship with Richard.

When Maggie’s mom’s health deteriorates, the doctors are at odds over how to treat her. Meanwhile, Richard comes to grips with Bailey’s betrayal over the Residency Program.

Nick whisks Meredith away to his Minnesota cabin for a romantic weekend, leaving Winston and Maggie to care for Meredith’s children. Meanwhile, Amelia and Kai grow closer.

With Levi’s help, a patient celebrates a milestone. Jo processes a difficult diagnosis, and Maggie and Winston decide their future.