Mim is a woman on the edge and is stuck as the maid of honour to her not-so-honourable 'best friend', Gemma.
On the day of the wedding, Mim cannot wait to be finished with Gemma. She has just been offered a dream job far away, but, with a problematic menstruation situation, their terminally hungover pal Bea, a manic photographer and the chain-smoking champion Auntie Anne threatening to capsize the day, it's up to Mim to make the day work so that the curse of Gemma's friendship can be broken.