Hollyoaks bosses have teamed up with the NSPCC for the hard-hitting storyline, which is set to focus around the McQueen family.
It all begins next week, when Porsche (Twinnie Lee Moore) reveals that she was sexually abused by her mum’s boyfriend Pete when she was just 15 years old.
Opening up to her cousin Phoebe (Mandip Gill), Porsche will explain how, despite finding the courage to tell mum Reenie about the abuse at the time, Pete managed to convince Reenie that the allegations were false and that Porsche had actually tried to seduce him.
Speaking about the emotional storyline, a Hollyoaks spokesperson said: “The McQueen sisters – Porsche, Celine and Cleo - came to Hollyoaks to escape from an unhappy home life and the memory of Reenie’s boyfriend, Pete.
“The sisters had never confided in each other about Pete’s inappropriate behaviour, which they had all experienced to varying degrees, so the extent of the danger he posed within the family was never revealed.
“When Pete comes back into their lives troubled Reenie desperately wants him to stay and the girls want their mum to be in a happier place - but letting him into their home brings with it devastating consequences.”
Hollyoaks and the NSPCC will both offer online support as the storyline is explore, promoting a ‘No Secrets’ campaign in a bid to help young people speak out if they find themselves in a similar situation.
Jon Brown, NSPCC lead for tackling sexual abuse, said: "Sexual abuse is a crime that rips apart families and I am very pleased with the way that Hollyoaks has thoughtfully approached an enormously emotive and challenging subject."
He continued: “Sexual abuse of children within families is disturbingly the most common form and the impact on victims is devastating, sometimes damaging them long into adulthood if they don't get the right support.
"Children can stay silent for fear of what speaking out will do to the relationships they have with other members of the family. Abusers may cynically use this fear to keep children silent, leaving them suffering a daily nightmare.
“It’s important children know that help is out there and they can move forward positively."
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first look screenings at 7pm on E4.