

Gerald Culley transmigrates to a weapons factory in the early days of the nation’s founding, witnessing the legendary general inspiring everyone to develop a domestically-produced Multiple Rocket Launch System (MRLS).Shocked to find himself in the past, he remembers his past life’s love, Carolyn Thomas, and her sacrifice, and vows to change history. Through his unwavering determination and deep understanding of weapons development, Gerald earns the general’s recognition. He and Carolyn form a research team and embark on the grueling path of creating weapons that will defend their nation.

Adrian Leigh transmigrated to the Kingdom of Xosa and became the half-witted Duke of Yarwick. During Prince Jason's coup,Adrian played the fool and surrendered the imperial seal in exchange for exile to Brimholt. On the journey, he eliminated Bob Zinke, the loyal spy Jason had dispatched to keep him in check. In Brimholt, he outwitted the local governor, Thomas Webb, thwarted his schemes three times and gradually won over the Baelmar faction. Eventually, he returned to the capital with the coffins of the Three Dukes, wiped out Jason's clique, restored order to the realm, and ascended the throne as emperor.

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.