Marnie has a life-threatening condition. The doctors believe it is in her best interests to be allowed to die, but her loving family disagree. And so begins a fight that will take them through every stage of a legal process, as they struggle to contemplate this huge decision. Who decides? And in whose best interests will it be?

Rookie lawyer Chen Boyun made a promise at an early age that she will work hard in achieving social justice, and not to drop any opportunities to advocate for justice. Experienced lawyer Fang Chang is the exact opposite; he now only pursues cases that require quick fixes and has long stopped investing personal feelings into cases. When Chen Boyun becomes the intern and personal assistant of Fang Cheng, conflicts ensue as they argue for different "best interests".

Gay mothers argue for the right to custody of their children.