As DI Geordie Keatingand Reverend Alphy Kottaram continue to work together as a crime-solving duo in scenic Grantchester, they must also support each other through changing times, family struggles, and personal secrets. This season, Alphy feels like he’s found a home, but he’s forced to confront secrets he’s kept close to his chest. Will he be able to let anyone fully in, or must he confront truths about himself first?

　　Sue, Cheryl and Lexi are best friends. They do something special every year for their birthday as they were all born on the same day. Now their 18th birthday, they set out to lose their virginity.

Tom Brittney宣布这会是自己出演的最后一季，Rishi Nair加入饰演新牧师Alphy Kotteram，并将在潜在的后续新季中接替主角位置。

英国曼彻斯特，一栋郊区房子里的住户们各自过着不同于彼此的人生。看似有着一墙之隔，生活却将他们牵到了一起，像每个人一样，看似平常的人生中总会有着一些不同寻常。随着人物故事的逐渐交织，他们开始因为各自隐藏的秘密，以从未料想到的方式被联系到一起……