Tensions between Tom and his labourers erupt during the Sanditon cricket match. Charlotte and Sidney continue to clash resulting in Miss Lambe being placed in terrible danger. Lord Babington offers Esther a glimpse of a better future.

As the Sanditon summer regatta approaches, Sidney wrestles with his feelings towards an old flame and Young Stringer attempts to reveal his feelings to Charlotte. With Lady Denham at death's door, the tensions between Edward, Clara and Esther finally come to a head, with surprising consequences.