Desperate Hannah crosses paths with Alex, a crime kingpin on the run and gravely wounded. The two strike a deal to enter a flash marriage by contract: Alex will help Hannah obtain her green card, while Hannah will act as his wife to satisfy immigration officials. What begins as a transactional marriage built on mutual benefit gradually blooms into genuine love as they live side by side and fend off crises together. As Hannah slowly uncovers Alex’s hidden dark identity, she struggles between fear and growing affection for him. Meanwhile, Alex, for the first time in his life, yearns for a quiet, ordinary life free from his criminal underworld because of Hannah. The pair join forces to thwart every retaliatory plot orchestrated by Hannah’s ex-boyfriend Ethan. They eventually tear up their contractual agreement, hold a heartfelt official wedding, and embark on a brand-new chapter of their lives together, welcoming a child into their family.