Mutual Gossip: the Ceo's Contracted Pregnant Wife Is Top-Notch

In order to save her family, the heroine signed a "contract pregnancy wife" agreement with the hero, and after giving birth to a child, she took money and disappeared. The male protagonist thought she was just an ordinary woman who was greedy for money. Five years later, at an international summit, the male protagonist encountered a top-level assassination, but was subdued by the female protagonist who appeared as the bodyguard of the enemy leader. Only then did he discover that the woman he had been looking for for five years was actually the globally wanted S-class agent "Nightingale", and their son was playing with a remote-controlled bomb in the enemy's base.