While most people assume they simply don’t get along, the reality is far more complicated. Leon has spent years burying feelings he never wanted to acknowledge, choosing emotional distance over confrontation. His guarded behavior has slowly turned their working relationship into something strained and confusing, leaving Y/N convinced he simply dislikes her. Everything changes when they are assigned to an undercover mission aboard a luxury cruise ship targeting a bioterrorism suspect. To blend in, Leon and Y/N must pose as a married couple on an anniversary trip sharing a cabin, attending couple’s events, and maintaining the illusion of intimacy in front of passengers and crew.