Lu Chen finished his military career, intending to start over, but discovered that his mother Zhao Guifen and younger brother Lu Qiang forged guarantees in his name and ran up loans. To avoid endless debt collection and moral kidnapping, he mistakenly entered the Su Family Manor to apply for a security guard position. On his first day on the job, the Su family's young master Xiaobao suddenly choked on milk and suffocated, and all the maternity matrons fell into chaos, but Lu Chen heard the baby's clear inner monologue. Relying on the calmness and first-aid skills forged on the battlefield, he saved Xiaobao from the brink of death, and because of this, was exceptionally retained by Old Madam Su, becoming a full-time nanny with a monthly salary of 80,000.