Dylan plans to use his STI diagnosis as a positive journey of self discovery as he casts his mind back three years ago to Abigail, the first girl on his alphabetical list of exes, who he slept with at Angus' wedding.

Dylan must contact all the girls he has ever slept with to inform them that he has chlamydia. In a flashback to 18 months ago, Luke is enjoying the best sex of his life with psychology student Cleo.

In a flashback to 10 months earlier, Luke drags Dylan and Evie to a posh party in the country. Luke is desperate to sleep with childhood crush Ilona McLeod.

Following the disastrous exploits of 20-something romantic Dylan who must contact all the girls he has ever slept with to inform them that he has chlamydia.

In a flashback to four years ago, Dylan has been seeing Bethany for several months, but when she invites her protective big brother over to dinner a terrifying thought occurs to him.

Enthusiastically encouraged by Luke, Dylan sets about tracking down Phoebe who hasn't returned any of his messages. When the two of them show up at Phoebe's family home, they receive unexpected news.