A mother urgently needs to find her son's biological father to save him from leukemia, as bone marrow matching is difficult due to his rare blood type. With time running out, she faces the challenge of raising one million dollars for an expensive overseas treatment to buy more time. Meanwhile, Caleb Johnson, CEO of Johnson Group, grapples with family pressure from his grandmother to continue the lineage, despite his lack of experience with women and the need to marry before having an heir. As Caleb’s relatives urge him to act, a resemblance between him and the boy hints at a critical connection, leaving the search for the father unresolved.