Charecters and Story Line

There is a girl who lives in an orphanage, her roll number is 212, she has been called that since she was born. Preeti always wanted a sister, what happens when that wish comes true. Sameer is the headboy in school, he's always protective of his friends, but what happens when he bumps into role number 212, is she the one who comes in his dreams or not . Well you will have to read on about that with me...