Fourteen-year-old Prue and her sister Grace have been educated at home by their controlling, super-strict father all their lives. Forced to wear Mum's odd hand-made garments and forbidden from reading teenage magazines, they know they're very different to 'normal' girls – but when Dad has a stroke and ends up in hospital, unable to move or speak, Prue suddenly discovers what it's like to have a little freedom. Sent to a real school for the first time, Prue struggles to fit in.

Sylvie and Carl have been friends since they were tiny children. They've always played together, called each other boyfriend and girlfriend and, deep down, Sylvie has always believed that they'd end up married to each other. They even have a magical fantasy world that belongs to them alone.

Dolphin adores her mother, Marigold. She's got wonderful clothes, bright hair and vivid tattoos all over her body – a colourful lady, to match her colourful life. But Dolphin's older sister, Star, is beginning to wonder if living with Marigold's fiery, unpredictable moods is the best thing for the girls.

When life with Jayni's violent-tempered father becomes too frightening to cope with, Jayni, her mum and her little brother Kenny are forced to escape in the middle of the night. Slipping out of the house unseen, travelling up to London by train and checking into a hotel – it's almost like playing an elaborate game. They even make up false identities to protect their secret, and Jayni becomes the glamorous-sounding Lola Rose.

Dixie is the youngest Diamond girl. She and her sisters – dreamy Martine, glamorous Rochelle and tough Jude – could hardly be more different, but their mum has always tried to teach them the value of sticking together. Now Mum's expecting yet another baby, and she's convinced this one's a boy. She insists they move to a bigger place – but it's rough, dilapidated and filthy, and before they've even unpacked, Mum's gone into labour!

Quiet, cautious Pearl has always adored her bold, brash, bad big sister Jodie. When their parents get new jobs at a grand, fusty old boarding school, Melchester College, the girls have to move there – and when they arrive, things start to change. Jodie has always been the leader – but now it's Pearl who's making new friends. Jodie just seems to be getting into more and more trouble – arguing with Mum, scaring the little children, flirting with the gardener.

Em adores her funny, glamorous dad – who cares if he's not her real father? He's wonderful to her, and to her little brother Maxie and sister Vita. True to form at Christmas, Dad gives them fantastic presents, including a real emerald ring for his little Princess Em.Unfortunately he's got another surprise in store – he's leaving them. Will Dad's well-meaning but chaotic attempts to keep seeing Em and the other children help the family come to terms with this new crisis?

Shy, mild Mandy has been bullied at school for as long as she can remember. That's why she is delighted when cheeky, daring, full-of-fun Tanya picks her as a friend.Mum isn't happy – she thinks Tanya's a BAD GIRL and a bad influence on her daughter. But Mandy loves spending time with her brilliant new friend, and is sure Tanya can only get her out of trouble, not into it ... or could she?

You look as if you've seen a ghost!' Jade is so used to living in the shadow of Vicky, her loud, confident best friend, that when a tragic accident occurs, she can hardly believe that Vicky's no longer around. But Vicky's a sparky girl who's not going to let a small thing like being dead stop her from living life to the full! Whether Jade is in lessons, out running or tentatively trying to make new friends, Vicky is determined to make her presence felt ...

Sunset lives a life of luxury with her beautiful ex-model mum, her world-famous ex-rocker dad, and two little celeb siblings. But life on the red carpet is no compensation for rowing parents, constant nagging, intensive media scrutiny, and no real friends. Destiny, on the other hand, is an only child living on a rundown estate with a sickly but devoted mum who constantly tells her she's really the daughter of a famous former rock star...

April knows she was abandoned in a rubbish bin as a newborn baby, fourteen years ago. Now she's happily settled with her foster mother, Marion – but there's a part of April that's desperate to know where she really came from, and who she really is. If only she could remember her real mother – or even find her ...

Floss's parents are divorced, and she divides up her week, spending five days with her mum, her new step-dad and her baby half-brother. The other two days Floss spends with her dad, helping him to run his greasy spoon cafe. But their simple arrangement is thrown into disarray when Floss's mum decides to move to Australia. Making the difficult decision to stay at home, Floss moves in permanently with her dad and they muddle along happily together, surviving on chip butties and enjoying visits to the local funfair.

Violet has always been in the shadow of her mesmerising, controlling brother, Will - by turns delightful and terrifying. Now that Will has learnt a shocking secret about his own past, things seem to be getting worse. Violet retreats further into her fantasy world built around the fairy characters created by her favourite author, Casper Dream.

Gemma and Alice were born on the same day and have been devoted best friends ever since. Despite Gemma's larger-than-life personality and Alice's quieter, calmer character, the two are inseparable – until Alice has to move house, all the way to Scotland. Gemma is utterly distraught, particularly at the thought that Alice might find a new best friend. Is there anything Gem's brothers, or perhaps her Grand dad, can do to help?

Lily isn't home alone – but she sort of wishes she was; looking after her three younger siblings is a lot of responsibility. When Mum goes off on holiday with her new boyfriend and her stepdad fails to show up, Lily is determined to keep the family together and show they can cope without any grown-ups. But taking care of six-year-old twins, her three-year-old sister and the family's flat feels overwhelming and Lily is worried that school or social services might discover their situation and break up the family.