In his past life, Wang Yifan, a business tycoon, unexpectedly travels back and is reborn in 2002. He is now a 22-year-old security guard at a factory compound, and has gained for free a wife who is a teacher and three years older than him, along with a four-year-old lovely daughter. The whole family thinks he is good-for-nothing, and his wife is pregnant with twins. Pressures from work and family come one after another. Relying on memories of the future and his mature mind, Wang Yifan makes a fortune in the stock market and rises quietly against all odds. He dotes on his wife and protects his daughter, while resolving troubles in life, growing from a looked-down-upon security guard into the most reliable pillar of the whole family. The mundane warmth of daily life, the thrill of rising to success, and sweet affectionate moments interweave, bringing laughter and warmth together.