With the ceremony just moments away, Mick finds out that Dean has arrived at the venue and is down by the lake with Shirley.
As Mick rushes over to help his mum, Dean loses his temper and pushes Shirley into the water.
With no other option, Mick jumps in to save her, but when Dean ends up in the lake too, the pair soon end up fighting - will they make it out alive?
It’s been a busy Christmas period in Albert Square, and while the Carters had a bit of a break over the festive period, there was plenty of drama elsewhere.
The Beales found themselves having another difficult time, when Christmas with the Mitchells ended with a car crash.
Sharon’s son Dennis is still in hospital following the accident, and Ian Beale was last seen being taken away in handcuffs, after letting Phil lie about who was behind the wheel.
Watch ‘EastEnders’ at 6.30pm and 8pm on New Year’s Day to see the wedding scenes unfold.