Pauline is all set to achieve her ambition when she is given the chance to join the Portwenn lifeboat crew. However, her joy is short-lived when she discovers the chauvinistic tendencies of her shipmates. Martin is accused of murder by the husband of a woman who died in his care. The irate man resorts to sabotaging Aunt Joan's crops in retaliation but an unexpected twist reveals the true motivation for his ire.