Episode 5 - Diary of a Billionaire's Daughter-in-Law

Bae Jia dies on a hospital bed, her pregnancy gone and her rival standing at the door. Reborn at the exact moment the pregnancy test shows two lines, she vows to keep this baby alive. The father, Kim Minhyuk, is a billionaire heir with poor sperm motility, which makes this conception a miracle—and a target. His first love and her own friend begin circling, each with a plan that ends in miscarriage. Bae Jia reads their intentions before they move, but every defense she builds pushes Minhyuk further into suspicion. He demands a paternity test, then offers her a contract: carry the child, stay silent, disappear after birth. She signs it, knowing the signature is her only shield. Diary of a Billionaire's Daughter-in-Law turns a one-night stand into a survival game where the enemy is not the rival but the father's distrust. Can she outmaneuver two schemers and one suspicious heir before her second chance is taken from her?