In Republican-era Beiping, Jiang Wanyu is unexpectedly separated from her young son. While the child's maternal grandmother is taking him away, an accident occurs, and he is rescued by Murong Beichen and his father. Due to an error in the test report, Murong Beichen never discovers the identity of the child's biological mother. Determined to find her son, Jiang Wanyu enters the Murong Mansion as a wet nurse. A natural spiritual bond connects mother and child, while misunderstandings arise as those around them misinterpret one another's feelings. Eventually, Murong Beichen uncovers the truth and clears up all the misunderstandings. Jiang Wanyu and her son are finally reunited, and she and Murong Beichen rekindle their romance. At last, the whole family is reunited.