As Martin tries to unite the community with a beach clean-up, Rebecca faces having to sell the restaurant. Meanwhile, Gavin deals with his break-up and Lucy grows attached to the penguins.

When Tristan finds his mother's old camera, a reluctant Martin warns his son about the dangers of revisiting the past. Deciding to edit the footage anyway, Tristan uncovers buried secrets and reopens wounds that they both tried to forget.

While Martin tries to contend with the memories of his wife's drowning, Tristan turns to Yolande and Lucy is forgotten. Gavin comes up with an unexpected plan to help Rebecca.