Jess wakes up to find she has had a heart transplant … and the ghost of Tilly, whose heart she has received, is haunting her.
Tilly needs to find out why she was murdered and to put a few things about her inheritance straight. Jess, who is still recovering from major surgery, has to help her and puts her own life at risk in other ways as well.
The girls are totally different. Jess is ordinary and lives in Manchester. Tilly is very rich and has an expensive flat in London – and is also into Swiss bank accounts, posh shoes and boarding school.
There are many surprises however. Tilly is very involved with a charity that supports disadvantaged children. Cousin Georgie is not the good friend she thought she was - and the rather boring headteacher of her school is much more of a friend than she imagined.
Only Jess and Tilly’s granddad can see Tilly – so there are many hilarious scenes where Jess appears to be talking to herself. Ear buds are the answer; they make her look as if she is on her mobile.
More humour comes out in the contrast between the two girls. They gradually get to understand each other better.
They manage to get Tilly’s money back to where is should be and Tilly makes sure that Jess will be all right. Tilly is then able to move on. And Jess finally has her heart to herself and can complete her recovery.