After being dumped on TV, Zoe hides by living remote, until strange weather conditions cause her to seek higher ground at her old school, where she stumbles upon her own ten-year reunion.

The classmates realise they will be stuck at Ridge Heights for a while and devise a plan to survive. Zoe takes the blame and is determined to send a message to the outside world so they can be rescued.

Genevieve puts Saskia on trial for her vicious pranks, while Zoe finds herself in a quandary when Amelia agrees to defend Saskia.

When everyone has to sit inside with food poisoning during a severe storm, the class start healing old wounds. The ladies open the letters they had written to themselves for the future while in high school.