TV Series "Promise Not to Break Up" Plot Introduction: Episode 1-30 Sub-plot Introduction of "Promise Not to Break Up". The TV series "Promise Not to Break Up" is an urban emotional drama set against the backdrop of Shenzhen. It deeply portrays the relationships between doctors, patients, drug merchants, and media professionals, reflecting how in the big city - this seemingly cold concrete jungle - there is still the warmth of humanity and the flame of love.