"Red Lines" is a spin-off of the Russian drama series "Former" about doctors and patients in a narcology clinic. The plot revolves around Elena Berg, a writer and business coach, also known as "Aunt Lena" to the entire Internet. The woman's image is impeccable, and millions of followers subscribe to her social media channel. All these people sincerely believe in Lena's methods and are willing to pay insane amounts of money for her trainings. But there's something they don't know about her: Lena has more personal problems than all of them combined.