The lights are still on at Grey Sloan Memorial Hospital as the twentieth season returns. In response to Catherine's ultimatum, Meredith resigns from the Fox Foundation and instead publishes the research publicly, valuing its potential to save lives over hospital politics, and departs Grey Sloan while discussing a future together with Nick. In retaliation, Catherine fires Teddy for secretly funding Meredith's Alzheimer's research. Winston faces relationship doubts after Maggie cancels plans for him to visit Chicago multiple times. Arizona Robbins returns to Grey Sloan Memorial Hospital to work with Miranda Bailey and Jo Wilson.