D-Day by Yvette Gilmore

It’s the day of your wedding. Suddenly you have a sickening feeling in your stomach: You've forgotten something important! None of this makes sense. If you'd been following your to-do-list, everything would be done by now. Something has gone wrong. Looking around, you realise there's still a lot to be done. Your top priority is to get your to-do-list and get started...