In Reunion Series 1 Episode 1, Daniel is seen driving off in a car that has been kept under a cover in his parents' garage, but the specific contents of what he is hiding in the boot of his car are not explicitly revealed in the episode recap. The episode builds suspense around Daniel's past and what he might be concealing, but the exact item or secret in the boot remains a mystery at this point.

Daniel's deafness significantly impacts his interactions in the first episode. For example, his probation officer, Anna Shenford, does not initially realize he is deaf, leading to communication struggles during their meeting. Daniel uses sign language to communicate with others, such as when he asks a mechanic about someone named Vinay. His deafness also contributes to his feeling caught between two worlds and being shunned by both the hearing world and the wider deaf community due to his past crime.

In Episode 1, Daniel's relationship with his daughter Carly is strained and distant. His parents reveal that Carly no longer lives with them because they could not handle her drinking and drug problems. Daniel is upset that his parents do not know where Carly is, and he becomes determined to find her. His mother eventually gives him a leaflet for a cafe where Carly now works, indicating the beginning of his quest to reconnect with her.

The first episode introduces a mystery around Daniel's past, specifically the murder for which he was imprisoned for ten years. Viewers are left questioning what exactly Daniel did, whether he is guilty, and what happened to his wife. The show creates suspense by not revealing these details immediately, encouraging viewers to follow Daniel's journey to uncover the truth.

The setting and atmosphere in the first episode are portrayed as gritty and tense. Daniel wakes up in a prison cell and is released into a society that has changed significantly. The environments, such as the garage and the rundown flats where Carly lives, contribute to a dark and realistic tone. The show uses these settings to emphasize themes of alienation, struggle, and the challenges Daniel faces reintegrating into society.