Lena Duncan lost her parents in a fire, leaving her with a huge debt and the responsibility of caring for her young brother. On her birthday, she met Allen, a debt collector, and their lives became intertwined when they discovered they shared the same birthday and had similar experiences. Allen, impressed by Lena's resilience, gave her extra time to repay her debts and helped her on several occasions. Lena's talent with numbers earned her a position at Allen's company. As they worked together, their bond grew stronger and feelings began to develop between them. They faced conflicts in the criminal underworld, family disputes, and even an arson threat. Allen sought revenge and reclaimed power for Lena. In the end, they let go of their past and reopened "Lena's Restaurant" together, eventually getting married and living happily ever after.