After the catastrophic hospital explosion, Grey Sloan's staff scrambles to save not only their patients' lives but also their own. Confronted with impossible surgical decisions and emotional turmoil, they fight to preserve life amid devastation.

The team at Grey Sloan navigates a chaotic first day of surgical rotations amid hospital renovations. Meanwhile, Meredith spends time with Amelia.

A high-risk lung transplant pushes the surgical team to their limits. Meanwhile, Bailey juggles a trauma patient whose treatment hangs in the balance.

The interns juggle a bizarre trauma, while a complex breast reconstruction forces Meredith into a tense partnership.

Jo navigates a challenging case with a pregnant mother, while Blue and Jules care for a diabetic patient. Meanwhile, Simone treats a patient with a surprising revelation.

Grey Sloan takes in patients following a catastrophic bus accident. Teddy and Owen have an awkward encounter, and Richard tests Bailey's patience.

Bailey and Owen join forces to save a tumor patient, while Richard faces an internal battle. Meanwhile, Jules struggles with her feelings for Winston.

Richard continues to navigate his health. Meanwhile, Meredith and Nick are visited by Nick's estranged sister from Boston.

Addison Montgomery returns to Grey Sloan, seeking assistance with a patient with a neurological condition. Bailey joins Owen and Blue on a paramedic ride-along.

Teddy and Winston clash over a case, while Owen and Jules treat a urologist. Lucas struggles with prioritizing patients.

Tensions rise as Teddy and Winston take on a complex procedure, while Kavita and Ben try and impress the new plastics attending. Jo and Link leave the babies with a nanny for the first time.

Richard tackles a shocking case on his first day back, while Kavita and Jules prepare for a high-stakes presentation. Bailey must have a difficult conversation with a beloved patient, and Jo works to baby-proof the loft.

A couple lands in the hospital with life-altering injuries after a wrecking ball destroys their home. Lucas and Simone struggle to support a young, terminally ill patient, and Richard hosts a prostate screening event.

Bailey and Blue are forced to confront the emotional costs of experimental care. Meanwhile, Owen, Teddy, Simone and Dani help out at a busy rural hospital, and Richard attempts to spread information about early prostate screenings to the community.

Jo returns for her first full day back from leave, and Owen struggles to keep it together when someone close to him is admitted to Grey Sloan. Meanwhile, Bailey navigates hospital leadership.

A Station 19 firefighter lands in the ER for severe burn treatment, and the team treats an elderly patient impaled by an art structure. A Fox Foundation innovation competition reunites Meredith and Bailey.

After a catastrophic bridge collapse sends dozens of victims to Grey Sloan, the hospital activates its full disaster response as they race to treat a surge of critically injured patients, including one of their own.