Samson Kayo and Jane Horrocks star as Maleek and Wendy in this comedy drama, both paramedics at the south London emergency service. Maleek is a tough-acting loner and Wendy is an over-friendly divorcée, so when the two are partnered together, they seem a mismatched pair whose relationship is doomed from the start. However, as the duo endure the never-ending rush of 999 calls, put their lives at risk to save others, and struggle to gain the respect of their colleagues, they realise they might just be each other's life support.