Julia Curtis is a busy mother of three, with a husband often away for work, an ever-present mother-in-law, a career, and a house that needs doing up. Her 14-year-old daughter, Milla, has fallen in love for the first time, and her youngest, Ruby, is a nine-year-old fashionista who can out-negotiate anyone. But Julia’s 11-year-old son, Jackson, is different. Different to his sisters. Different to his classmates. In fact, Jackson is different from everyone. And bringing up a child who is different isn’t always easy.

Milly always dreamed of being a mother. Adopted herself, she has always imagined a powerful, intimate connection with a child of her own. So when she and her husband Matt are told they can’t have children, her dreams are shattered. But then their loved ones offer the ultimate gift - Milly’s best friend Anna and Matt’s brother Jack will be donors, so that Milly can finally have a chance to be a mother. Except none of the four people involved are prepared for the feelings that will threaten their most important relationships as their daughter receives a heartbreaking diagnosis.

No relationship is perfect. But since the birth of baby Mabel seven months ago, Amber and George have been in desperate need of a night away. Mabel is all that Amber has ever wanted, but she can’t deny that sometimes she struggles to cope. George has booked them into a luxury hotel, and Amber’s sister is babysitting. Yet just as they are ready to leave, Amber can’t suppress a feeling of worry.... 

Nathan West loved his wife Laura with all his heart. But now she’s gone, taken from him in a seemingly random act of violence. Laura was the glue that held their family together. And for Nathan, life without her feels almost meaningless. As he tries to find hope in the darkness, his three young daughters express their grief in different and challenging ways - with one set on a path of self-destruction that could devastate their family all over again. 

Rachel’s worst nightmare comes true when a rare auto-immune illness leaves 4-year-old daughter Emily in a coma the doctors say she may never come out of. And Rachel has to make a heartbreaking decision - one that her ex-husband, Emily’s dad James, doesn’t agree with. Terrified she’s going to lose her daughter for good, Rachel knows she must find a way to keep the hope alive for Emily. But there is only one person she can turn to for help to convince James - and it’s his new wife, Eva. 

Tilly hates her stepfather, Dave. He abuses her mother, but she refuses to leave him. Frightened for her own safety, Tilly asks to go into foster care and is placed with Cathy. Tilly arrives with a graze on her cheek, and Cathy becomes increasingly concerned by Dave’s behaviour, especially when she learns he has been showering Tilly with gifts. While she’s busy looking after Tilly and trying to keep her safe, Cathy is also worried about her own daughter, Lucy. 

When Tessa arrives at the little house by the lake with her two children, it is an escape. The rental house may be a bit small – but it’s theirs for the summer. A place to hide.... However, their isolation is disrupted by the family from the big house next door. Three children and their glamorous mother Rebecca – who seems determined to invite Tessa into their lives.

Ava only left her daughter in the pushchair for five minutes. The buckle was fastened, and she was sure it was safe. But when she came downstairs, the door was open and Abi was gone - she walked down the road, past the Lovegoods' house, and was never seen again. A year later, the Lovegoods throw a housewarming party, showing off the results of their renovation. Ava doesn’t want to go. She can’t bear to look down that end of the road, to see the place where Abi vanished, and she doesn’t want to spend time with people who don’t share her grief. 

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.

Grace and Dan Arden are in their 40s and have been on the IVF treadmill since the day they got married. Six attempts have yielded no results, and with each failure a little piece of their hope dies. Priya Laghari and her husband, Nick Archer, are being treated at the same fertility clinic, and while they don’t face the same time pressure as the Ardens, the younger couple have their own problems. Priya is booked for her next IVF cycle the same day that Grace goes in for her final, last-chance embryo transfer. Two weeks later, both women get their results.