Imagine you are an 11 year old girl who loves testing out her mothers make-up and dressing up as an adult. Imagine if that girl were to receive a magical mirror that allows her to transform herself into anything she wishes.
Obviously, she transforms herself into herself 10 years on. She gets a job, falls in love, stops her primary school friends from fighting and attempts to save a company from being sold.
...And then goes home for her mothers cooked food as an 11 year old girl.
Fun story with hilarious acting :)