Hannah's groom leaves her at the altar. Outside the church, she meets Josh whose girlfriend just dumped him before they were going to get married. Josh thinks Hannah should go on the honeymoon without her intended and focus on herself. Hannah allows herself to be persuaded but only does so if Josh goes on a similar trip himself and Josh promises to. Fate has it that they both, unbeknownst to each other, travel to Hawaii where they also end up in the same hotel.
A relatively predictable story without big surprises, but it still benefits from the fact that it doesn't go too fast and that their past relationships play a role in how it develops.