1Episode 1
Marnie has been plagued by disturbing sexual thoughts for as long as she can remember. At her wits end she hops onto a bus bound for London where she tumbles into the life of the eccentric Shereen, sardonic Amber and charismatic Joe.
2Episode 2
Marnie hits another dead end when she goes to a sex addicts meeting, but she finds an unexpected kindred spirit in recovering porn addict Charlie.
3Episode 3
Marnie is determined to make the most of being a single Londoner now she knows what is wrong with her. She jumps into bed with Benji an earnest, clingy barista, but it has consequences at her work.
4Episode 4
Marnie and Charlie try to pick themselves back up after hitting rock-bottom. Marnie gets help from an unexpectedly understanding Shereen while Charlie tries to prove he's up to his old job.
5Episode 5
Encouraged by her new therapy, Marnie tries out trusting her old friend Helen with her secrets and brings her two worlds together at a big dinner party. What could possibly go wrong?
6Episode 6
Marnie is shaken when she realises she's pushed Shereen too far, and starts to become paranoid that everyone has turned against her now they know about her condition