For Jennie and her joint best friends, Amy Lee and Nigella, the Maths Olympiad is the highlight of their academic calendar but when it seems that Amy Lee has found a boyfriend on an opposing team Jennie becomes jealous and the girls' competitive natures are unleashed. Cassandra buries her cat Chinnie and then takes her charges to the cinemas in the up-market nearby suburb, Spooner Hill. When Cassandra is refused free refills at the cinema Candy Bar she is involved in an altercation with staff and subsequently arrested. Jennie ends up losing the Maths Olympiad for her team in a cut-throat knockout final but Amy Lee exhibits her Christian kindness and eventually forgives Jennie and then herself for acting like a 'slut.'

After a sign from God, Jennie and her friends decide to enter the upcoming ‘Let’s Get It On’ dance battle which has a first prize of $10 000. After initial rehearsals it appears that their dance abilities aren’t nearly as good as their mathematical prowess so Jennie hunts around the school for people with ‘mega mad dance skills’ to join their squad so that they may have a hope of beating the school skanks: Tracy, Tizzneen and Tessa. Simultaneously Cassandra is sacked from her position as a professional carer due to her negligence but then discovers that one of her charges, Marilyn, has won a colouring-in competition and that she’ll need her to collect the prize. Additionally it is revealed that Nigella’s mother has been poisoning her which is the cause of all her strange allergies and illnesses.

Cassandra uses Jennie as a ‘replacement mong’ in order to collect the prize for the colouring-in competition which Jennie learns to be $10 000. Jennie begs her Aunty to give the money to her mother for the stomach stapling operation but Cassandra insists that she needs it to go to Vanuatu and win back her husband. In order to help Jennie win the dance battle the hugely obese Berenice uses all of her willpower to get up and go on a mission to find Jennie some nice costumes. Yet before she gets anywhere she becomes lodged in the front seat of her car. Jennie prays with the help of the G.L.S. and enlists Nick into her dance battle team but will this be enough to win? Or will the now cashed-up Cassandra change her selfish ways and save her sister?

Cassandra uses Jennie as a ‘replacement mong’ in order to collect the prize for the colouring-in competition which Jennie learns to be $10 000. Jennie begs her Aunty to give the money to her mother for the stomach stapling operation but Cassandra insists that she needs it to go to Vanuatu and win back her husband. In order to help Jennie win the dance battle the hugely obese Berenice uses all of her willpower to get up and go on a mission to find Jennie some nice costumes. Yet before she gets anywhere she becomes lodged in the front seat of her car. Jennie prays with the help of the G.L.S. and enlists Nick into her dance battle team but will this be enough to win? Or will the now cashed-up Cassandra change her selfish ways and save her sister?