Everyone fears the worst when Emma Brooker collapses from a mystery illness...
The drama starts when Maria Connor asks Ali to take a look at Emma after she arrives at work with a pain in her side.
But while Ali should be the perfect person to come to with your ailments, his mind is elsewhere when he discovers Maria has landed herself a date with Gary Windass.
Ali, who is secretly still in love with Maria, is heartbroken that she has moved on so fast, and so dismisses Emma's pain and tells her that she probably just has food poisoning.
With the pain getting worse, Emma heads home to rest up, while Toyah tells Ali that he should come clean to Maria about how he feels before it is too late.
However, it's not long before his love life is the least of Ali's problems when Emma's condition deteriorates rapidly.
Maria and Gary are horrified to find her collapsed on the floor of the flat later that day and they immediately call an ambulance.
Steve McDonald isn't far behind as his daughter is raced into hospital, where everyone is stunned to discover that Emma has a ruptured appendix and needs an emergency operation to save her life.
Steve is beside himself with worry, but his panic soon turns to anger when he finds out that Ali dismissed Emma's symptoms as food poisoning.
As Steve comes face-to-face with Ali in the hospital all hell breaks loose when Steve blames him for landing Emma in so much danger and tells him he's going to report him for medical negligence.
With Ali's life spiralling out of control before his very eyes, will this be enough of a shock for him to clean up his act and ditch the drugs?
And will Emma survive her operation? Or is Steve about to loose the daughter he has only just found?
Coronation Street airs on Mondays, Wednesdays and Fridays at 7.30pm and 8.30pm on ITV.
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