In the previous life, the newborn son of Lu Shen and Su Nian mysteriously disappeared on the first day. Both could not withstand the heavy blow; Su Nian went insane and was driven mad, and Lu Shen, deeply engulfed in grief, was also accidentally killed by Su Nian. Reborn overnight, Lu Shen returns to the first day of his son's birth. In order to prevent the tragedy from happening again, he guards against everyone around him, carefully setting up defenses and investigating. When he confirms the true culprit, he personally sends the criminal to the trial dock, protecting his own small family. This manhua is adapted from the Tomato Novel "The First Day of Rebirth as a Father, I Pushed the Obstetrics Head Nurse to a Breakdown", author Honghui 1.