A weekend getaway on a party yacht goes wrong for a group of highschool friends that are older. They neglect to let the ladder until they jump in the ocean for a swim. The boat proves impossible to scale. They are stuck at the water many miles together with baby Sara left on board, from shore. Sara's mum Amy has to compete with the increasing desperation of the group her aqua-phobia as well as, as the friends start to turn on each other. So on the exhaustion of keeping the struggle to reunite up to speed begin to have a dreadful toll. The joyful reunion becomes a struggle for survival...