90 Days Countdown to Doomsday

90 Days Countdown to Doomsday Plot:

Lin Xiaoman, a worn-out corporate slave, had just been torn apart by her boss when a global alert blared: "90 days until doomsday." To her horror, Lu Zhao—her ex who vanished without a word three years ago—shows up at her door with a tattered "Doomsday Survival Manual." He confesses he went underground to research the apocalypse signal and now risks everything to protect her from resource wars, betrayed neighbors, and collapsing order. But Xiaoman still seethes over his sudden disappearance—until Lu Zhao takes a falling rock for her, his waist stained dark red. As the countdown ticks from 90 to 80, will they uncover the truth of the past, or drift apart with regrets as the end nears?