A man named Liam crashes a wedding, confronting someone on the altar before realizing he's at the wrong ceremony. He learns his actual fiancée, Mona, has been cheating on him for years. Meanwhile, the bride, Luna Black, is furious at the intrusion. As her security drags him out, Liam is left reeling from a double blow: public humiliation and a shattered relationship. Now stranded at a stranger's wedding, he faces the immediate wrath of the powerful bride.