The present. Jealous and sensing ulterior motives in Fitz's return to Toronto, Chen confronts him with a stash of love letters he wrote to Ming. The two come to blows then reflect back on a time during their residency when they helped each other out during a Code Blue. At the ensuring peer assessment review, Fitz takes stock of his mettle as a doctor, his motives as a friend and his true feelings for Ming.

After Fitz takes a sick patient from China to Toronto who dies later, he is diagnosed with a mysterious respiratory illness. He is immediately put into isolation, but has infected Chen who examined him. Ming is in quarantine at home where she starts to rethink again about adoption. Bearing the scars of never knowing her father, she doesn't know if she wants to make a child go through that situation again.