Kelsey Wilson is a talented wedding planner who is excited to plan her cousin's wedding, which is the biggest and most exclusive event in her career so far. The wedding is going to be held at a luxurious estate and will feature some of the most lavish decorations, food, and entertainment imaginable.
However, Kelsey's plans are put in jeopardy when Connor McClane, a private investigator, shows up at the wedding venue. Connor has been hired by an unknown source to investigate some suspicious activity surrounding the wedding, and he believes that Kelsey's cousin's fiancé may not be who he says he is.
Despite her initial annoyance with Connor's intrusion, Kelsey soon finds herself drawn to his charm and wit. As they work together to unravel the mystery surrounding the wedding, they grow closer and Kelsey begins to realize that Connor might just be the perfect man for her.
As the wedding day approaches, Kelsey and Connor discover a shocking secret that threatens to ruin the entire event. With time running out, they must work together to prevent the disaster that could destroy everything Kelsey has worked so hard for.
In the end, Kelsey and Connor emerge as heroes and successful planners of the perfect Christmas wedding. They also discover that they have fallen in love and decide to start a new life together, planning weddings and solving mysteries as a team.