Season 3

Mel gets a job offer as an assistant to a fashion photographer. However, her audition takes place during school, so she goes to the audition whilst Sophie (who is not a very gifted morpher) morphs into Mel and goes to school. Unfortunately, she goes around kissing everyone, including Trent, Frankie and Mrs. Hardman. She is referred to a child psychologist. Sophie panics when seeing the psychologist and Mel arrives to take over. She soon transforms to a lady with Red hair to make sure the psychologist doesn't see there are two Mel's. However, Sophie cannot morph back to her original human form, and decides to keep another look, thus introducing a new looking Sophie (Carla Medonça).

Brian and Sophie become hooked on a trading card game, and will go to any lengths to obtain more cards. They end up stealing and selling the school laptop. They then discover there is a rare card (Madonna) that they need to find. They find the card, but realise they have wasted their time and money. They feel very silly.

Lucy discovers she has a talent for judo, and Brian thinks the only way to keep her as his friend is to tag along. Sophie then decides she wants to be Trent's friend. However, she later brings a live duck into the house to cook. Trent gets upset when he sees this and asks her what's going on. Mel tells him that Sophie is making a statement about vegetarianism, so he thinks they are vegetarians. Meanwhile, Lucy gets ready to go to Paris for a judo competition.

Brian and Sophie are not technically married, so Lucy arranges a wedding to bring the family closer together, but her grand ideas are nothing compared to Sophie's. Brian learns it is hard to choose a best man. When Mel gets angry about the wedding, they decide not to have a proper wedding, but a friendship ceremony instead.

Josh fails his biology exam and has to retake it in 2 days. Brian goes to see Mrs Hardman and says he can do better and can make Josh clever. Brian morphs into Josh and does the exam instead. Meanwhile, Lucy is having troubles in the orchestra because she can't play her instrument and gives up.

It's Valentine's Day, and Josh is trying to get a date with Tanya Thomas, but makes the foolish mistake of taking Brian's advice on matters of the heart. Mel is the object of desire of Andy the Freak and Frankie when all she wants is a 'joke' Valentine's card from Trent. Sophie follows her heart and writes a card to her true love: the dishwasher. Sophie asks the family what Valentine's Day is, but in an episode a few years ago when Barbara Durkin played Sophie she is trying to act calm in front of a teacher who has come to visit the house and she says "This happened to me once on Val.... Valentine's Day".

When Lucy wants Brian's help with her magic act, his ambitions go far beyond being her assistant. Mel runs in the school's sponsored FunRun with Andy the freak in a pantomime horse costume.

An alarm sounds in the household – signaling that there is a Valux rescue ship nearby. Brian and Sophie are faced with a difficult decision: go home, or stay with the children. The children are horrified that they might be abandoned again and recall (in flashback) the day they were fostered by a very different-looking Brian and Sophie. Lucy was desperate for a family, Josh was still looking for fringe benefits and Mel was desperate to avoid disappointment. Can Brian and Sophie be persuaded to keep their family together?

On Halloween, Josh has a plan to run a tour of the school, with Frankie and Pete helping to spook the students. Mel wants a Halloween party but is so scared that no one will turn up that she advertises the event as Trent's party. However, no-one wants to come a party held by Trent either and the two of them turn out to be the only ones there. During this episode there is one of the many obviously romantic moment between Mel and Trent when they almost kiss in Mel and Lucy's bedroom.

Brian and Sophie adopt a new child: Howie. Howie turns out to be a safety freak, much to the exasperation of Mel, Josh and Lucy. Seeing their reaction, Howie runs away... and then the children's social worker comes to the house for Brian and Sophie's progress report. Due to objections from fans of the show saying that Howie was too annoying the character was discontinued after this one brief appearance.