Wedding bells ring for one of the group, while Jenny and Pete can't get enough of each other. David and Karen lock horns over parenting and Adam hears some hurtful home truths.
Adam begins a journey of self-discovery that opens his eyes and heart. Jenny grapples with her secret and Pete is preoccupied with helping troubled Evan. David struggles with being a kept man and Karen prepare for the twins birthdays.
The gang go to a music festival to support Adam and his band. David enjoys the perks of festival life a little too much, Adam and Karen try to out festival each other and Ellie lives it up with her college friends.
Adam is enjoying his new relationship, but cannot help feeling jealous when Karen's head is turned by benevolent vicar Dan. With Charlie by her side, Jenny starts her cancer treatment and gets a new lease of life. Elsewhere, David hits rock bottom.
Adam and Karen realize that their secret needs to come out soon, but when the bomb drops on their close friends, it has unexpected results. Jenny has some sad news and it helps her decide, with Pete's help, what she has to do.