Jelly (who is wobbly when she runs and when she sees Roger Lovely) and her dorky best friends Ruby and Myf are going to senior school. They want to be cool - the trouble is, none of them is cool at all. Jelly's mum and stepdad are like chalk (a bit screechy) and cheese (a bit smelly). They're not helping the cool situation either, until Jelly's mum suggests a birthday party…