Su Nian, who was born in an orphanage, is gifted with the ability to hear babies' voices. In order to find her missing sponsor sister Shen Ruoxi, she gave up Qingbei and infiltrated the wealthy Lu family as a nanny. Facing the cold-faced CEO Lu Jinshen and the crying baby boy, Su Nian used her superpower to diagnose his allergies and turned the baby into a smile within ten minutes. While taking care of Xiaotuan, she investigated the truth and found that her sister's disappearance was related to Lin Shiyu and Lu Jinhan. At the critical moment when the villain launched a coup and kidnapped the whole family, Su Nian piloted an unfinished mecha to perform a rescue drama of "baby driving a Gundam". In the end, the truth was revealed, Shen Ruoxi was rescued, Su Nian found her sister, and the family was reunited.
