Davina McCall rings the bell on a one-of-a-kind speed-dating event where single hopefuls get to date a stranger they could end up marrying. The only catch? They won't know who they've been matched with until they meet them again on their wedding day... on the other side of the world. The first three couples start their stranded lives together, but for one pair, it's not long before a blast from the past threatens to sink their ship.