Chen Mo, a retired special forces soldier with a withdrawn and indifferent personality, became the father of three children due to an accident. The eldest daughter Chen Anqi is 10 years old, precocious and sensible but hides rebelliousness; the second son Chen Yi is 7 years old, an autistic genius with extraordinary talent in painting; the youngest daughter Chen Xin is 4 years old, innocent but suffering from congenital heart defect. He is bound by a mysterious system - the "Bad Daddy System". The core purpose of the system is: the more bad you are, the more powerful you will be!
Chen Mo originally wanted to live a life of "eating and drinking when he should, but not taking anything to heart", but he found that this system is more cruel than 996. The tasks issued by the system seem random: "If you are 10 minutes late to pick up your child from kindergarten today, you will be rewarded with +1 physical fitness", "Teach your child to deliberately write wrong answers when doing homework, and you will be rewarded with mastery of cooking skills", "Let your child complete household chores independently, and you will be rewarded with +50% combat skill proficiency."
When the richest man's domineering mother came to snatch his child, local gangsters came to collect protection money, and when the child's biological mother drove a Rolls-Royce and demanded custody, Chen Mo discovered that what this "broken system" wanted him to do was to deal with worldly worries, the eyes of the outside world, and all the rules and regulations that tried to restrain him. What he wants to protect is this shaky but warm little family that has just been put together.
This is the story of a man with a cold face and a warm heart who uses the most "irregular" way to accomplish the most serious thing - being a good father.