"Wedding planner Kelsey McKenna is just a few hours away from wrapping up her latest job: a destination wedding in the charming, colonial Mexican town of San Miguel de Allende. The reception is all set up, the tequila donkey is waiting outside, and the bride and groom are standing on the altar, pledging their eternal love. But just as the priest is about to pronounce them husband and wife, one of the bridesmaids upstages the couple by collapsing...