A chance accident brings Charlotte Heywood to Sanditon, a seaside resort on the cusp of dramatic change. Spirited and unconventional, Charlotte is initially keen to experience everything the town has to offer but is then shocked by its scheming and ambitious inhabitants and intrigued by the secrets they share. When Charlotte is tactlessly forthright about the family of enthusiastic entrepreneur Tom Parker, she immediately clashes with his handsome but wild younger brother Sidney. Amidst the rival suitors and unexpected danger, can Charlotte and Sidney see past each other's flaws and find love?