Probably most of you knows movie "13 Going on 30" (Suddenly 30in some countries). So my idea is a opposite story "30 Going on 13" maybe "35 Going on 10". It would be about succesfull businesswoman working in huge corporation but starts being bored about her life in luxury and success. On her 30th huge birthday party, she starts thinking that she is aging, everything is boring and missing old times. Completely drunk she is blowing candles on her birthday cake wishing to be young again. Than next morning she wakes up as a little girl 8-13 y.o. After the initial admiration, she starts discovering that there are also a lot of downsides about being that young that she completely forgot. She wants to become adult again and to regain the old life but it is not so easy.

So what do you think about such plot? Maybe something like that was done before? Is there anybody who can help me working on it?