Aruna Kelly (23, savvy, determined) arrives for her first day as an intern at the hectic City Metro Ambulance Station. Aruna, whose Indian mother was killed in a hit-and-run when she was three, has recently graduated as a Paramedic, top of her on-line class. Now it’s real life, on the frontline, and Aruna is desperate to succeed.

Academic success counts for nothing when Aruna fails to resuscitate a 7 year old girl, victim of a crowd riot. The legacy of her father, Mick, doesn’t help either. He was a gun ambo nicknamed ‘Lazarus’ (he brought them back from the dead). Mick’s out on stress, but he pulled strings to get Aruna the coveted gig at City Metro. The scorn of her new workmates is harsh.

Off to a disastrous start, Aruna is relegated to filing duties until the circumstances surrounding the little girl's death are clarified. Then there's another death. No-one's fault. Another crew find an elderly man on the floor of his kitchen, phone in hand, already dead.

By the end of the first season, Aruna thinks she’s discovered the identity of the murderer: Tony. She challenges him to confess only to be blindsided when he dies in suspicious circumstances. The real killer is still at large and Aruna is left taking the blame for Tony’s death. The path to the truth opens up with the shocking revelation that Aruna’s mother died on the way to a tryst with a woman. Aruna faces the devastating reality that her father, Mick, is now the prime suspect.

Aruna’s hunt for the murderer is a maze-like puzzle. Just when something seems obvious her investigation takes another direction, all amidst the relentless pace of emergency response.