An intimacy crate washes up to help the honeymooners get personal. And when the couples spend the day apart at beach picnics, some are left reeling from shocking revelations, before a brand new couple jump into stranded life together.

The curtain comes down on Film Fest, but there's an encore of emotion still to come. The couples split into two groups and head off for days out on separate islands, unaware that castaways – some of whom are all too familiar – plan to gatecrash their parties.