The drama stars deaf actress Genevieve Barr in her first major role following her successful screen debut in Channel 4's The Amazing Dermot, alongside Dervla Kirwan, Gina McKee, Hugh Bonneville and Douglas Henshall.

The plot centres around Amelia, portrayed by Genevieve Barr, an eighteen-year-old struggling to integrate into a hearing world following cochlear implantation, who witnesses the murder of a police officer.

Amelia has overprotective parents, Anne and Chris (McKee and Bonneville), and relishes the chance to party with her cousins Tom, Joel and Sophie (Ferrier, Kane and Oldfield).

[3] While there, Amelia witnesses the murder of Jane Shilladay (O'Grady), a policewoman who works for the domestic violence unit and is romantically involved with colleague and amateur boxer Rocky (Campbell).

He keeps her evidence and identity a secret in order to protect her, putting his career at risk, but their lives become endangered when he begins to unravel police corruption within the drug squad.