Oskar's school teacher raises the alarm. Oskar's mother is abroad, and he has been left in the care of friends, but has been arriving in school hungry, unkempt and with bruises on his arms, legs and body. Experienced foster carer Cathy Glass is asked to look after him, but as the weeks pass, her concerns deepen. Oskar is far too quiet for a child of six and is clearly scared of something or someone.

When Stevie’s social worker tells Cathy, an experienced foster carer, that Stevie, 14, is gender fluid she isn’t sure what that term means and looks it up. Stevie, together with his younger brother and sister, have been brought up by their grandparents, as their mother is in prison. But the grandparents can no longer cope with Stevie’s behaviour, so they place him in care. Stevie is exploring his gender identity, and like many young people he spends time online. Cathy warns him about the dangers of talking to strangers online and advises him how to stay safe. 

Born in a prison and removed from his drug-dependent mother, rejection is all that 7-year-old Alex knows. When Cathy is asked to foster little Alex, aged seven, her immediate reaction is: Why can't he stay with his present carers for the last month? He's already had many moves since coming into care as a toddler and he'll only be with her a short while before he goes to live with his permanent adoptive family. But the present carers are expecting a baby and the foster mother isn't coping, so Alex goes to live with Cathy.

Cruel to Be Kind is the true story of Max, age six. He is fostered by Cathy while his mother is in hospital with complications from type 2 diabetes. Fostering Max gets off to a bad start when his mother, Caz, complains and threatens Cathy even before Max has moved in. Cathy and her family are shocked when they first meet Max. But his social worker isn't the only one in denial; his whole family are, too.

When Cathy is told about Melody’s terrible childhood, she is sure she’s heard it all before. But it isn’t long before she feels there is more going on than she or the social services are aware of. Although Melody is angry at having to leave her mother, she also worries about her obsessively - far more than is usual. Amanda, Melody’s mother, is also angry and takes it out on Cathy at contact, which again is something Cathy has experienced before. When Amanda misses contact, it is assumed she has forgotten, but nothing could have been further from the truth.

Jackson is aggressive, confrontational and often volatile. His mother, Kayla, is crippled with grief after tragically losing her husband and eldest son. Struggling to cope, she puts Jackson into foster care. Cathy, his carer, encourages Jackson to talk about what has happened to his family, but he just won’t engage. His actions continue to test and worry everyone. Then, in a dramatic turn of events, the true reason for Jackson’s behaviour comes to light....

Aneta and Filip, the children’s parents, are distraught when their children are taken into care. Aneta maintains she is innocent of harming them, while Filip appears bewildered and out of his depth. It’s true the family has never come to the attention of the social services before, and little Kit and Molly appear to have been well looked after, but Kit has a broken arm and bruises on his face. Could it be they were a result of a genuine accident, as Aneta is claiming?

Beth is a sweet-natured child who appears to have been well looked after. But it isn't long before Cathy begins to have concerns that the relationship between Beth and her father is not as it should be. Little Beth, aged 7, has been brought up by her father Derek after her mother left when she was a toddler. When Derek is suddenly admitted to hospital with psychiatric problems, Beth is taken into care and arrives at Cathy's.

Can I Let You Go? is the true story of Faye, a wonderful young woman who may never be able to parent her unborn child. Faye is 24 and pregnant and has learning difficulties as a result of her mother's alcoholism. Faye is gentle, childlike and vulnerable and normally lives with her grandparents, both of whom have mobility problems. Cathy and her children welcome Faye into their home and hearts.

Evie and Elliot are scrawny, filthy and scared when they turn up on foster carer Maggie Hartley's doorstep. Aged just two and three years old, this brother and sister have hardly set foot outside their own home. They have been prisoners, locked in a world of abuse, violence and neglect. Maggie soon realises that Evie and Elliot are lacking the basic life skills we all take for granted, and the outside world terrifies them. Gradually unlocking the truth of their heartbreaking upbringing, Maggie tells their shocking true story.

Having recently lost his mum to cancer, when eight-year-old Tom comes to live with Maggie, he is scared and alone. Tom has been taken into care following concerns from his teachers about his dad Mark's ability to cope as a single parent following the death of his wife. As a former soldier, Mark has resorted to his military training in order to cope with his young son, forcing him to scrub the floors until his hands bleed and perform repeated push-ups as punishment for his misdemeanors. 

Ruth was a ghost of a girl when she arrived into foster mother Maggie Hartley's care. Pale, frail and withdrawn, it was clear to Maggie that Ruth had seen and experienced things that no 11-year-old should have to, that she had been conditioned to 'see no evil, speak no evil'. Ruth is in desperate need of help, but can Maggie get through to her and unlock the harrowing secret she carries? Through love, reassurance and patience, Maggie starts to unravel Ruth's painful past.

'Is It My Fault Mummy?': seven-year-old Paris is trapped in a prison of guilt. Devastated after the death of her baby brother, Joel, Maggie faces one of her most heartbreaking cases yet as she tries to break down the wall of guilt surrounding this damaged little girl. 'A Desperate Cry for Help': 12-year-old Meg arrives at Maggie's after a fire destroys the children's home she's been living in. Traumatised by the fire and angry and vulnerable, having been put into care by her mother, Meg is lashing out at everyone around her. 

The heartbreaking story of three little children searching for someone to love them. Maggie Hartley faces one of the toughest challenges of her career when three abused and neglected siblings she’s been caring for are placed for adoption with a family she believes are unsuitable. The couple are looking for a perfect ready-made family, and Maggie knows that they’re not going to find it with these traumatised children. And when her worst fears come true, Maggie must fight against the very system she’s part of to have the siblings returned to her so that she can start to undo some of the damage that has been done.

Just when Casey thinks her foster care duties are done, she’s asked to look after Sam, a troubled nine-year-old with a violent streak who drove his previous guardians to release him of their care. It soon unfolds, however, that this is no simple case. Determined to get to the root of Sam’s behaviour, Casey is committed to uncover his mysterious past only to find out something far darker than she ever imagined.