Coronation Street viewers will see joyous scenes next week, as Chesney Brown and Gemma Winter finally tie the knot.
But what they don't know yet is one wedding guest is hiding a devastating secret, following a shocking health diagnosis.
Gemma's twin brother Paul Foreman hides his secret pain during the ceremony, with him yet to tell his family he has been diagnosed with motor neurone disease.
Paul recently learned he may have just three years to live, and only his friend Dee-Dee Bailey knows about his condition.
Next week, as Gemma and Chesney prepare to wed Paul is struggling with a new symptom, after initially struggling with one of his hands.
Doctors had thought it was a nerve injury following a van crash, but Paul later learned his lack of grip and strength in his hand was a symptom of MND.
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Next week, he begins to struggle with one of his feet and is forced to hide this from his family and friends.
Meanwhile, Gemma and Chesney pull out all the stops for their big day as Gemma turns up in a huge orange wedding dress.
While secretly battling symptoms, Paul walks his sister down the aisle where she is met by Chesney, and they exchange their vows.
After a recent row with Gemma, Paul makes amends on the big day with a speech in front of the guests but ends up getting emotional.
He begins to drag his foot as he struggles to control it, so will anyone question his apparent injury and will Paul be forced to confess all?
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Later, Gemma joins Chesney for the first dance as their loved ones celebrate their nuptials. Paul then drags Gemma up for a duet, as Billy and Bernie hit the dance floor.
Paul is determined to grab happiness while he can, but when the truth does come out how will mum Bernie and sister Gemma cope?
Paul actor Peter Ash recently discussed the storyline, after the soap confirmed the diagnosis earlier this year.
Peter said: "Paul is completely blindsided by the diagnosis and he decides to keep it from his family and friends as he tries to come to terms with the news.
"I knew very little about MND before embarking on the storyline and I am hugely grateful to the MND Association for all their help and support.
"For any actor playing a role which examines a real life issue or condition there comes a huge sense of responsibility and we are aware that some people watching this storyline are experiencing it in reality, it is their life."
Coronation Street airs Mondays, Wednesdays and Fridays at 8pm on ITV1 and ITV X.