Police call centre operater Joel starts his shift in Melbourne with a panicked caller reporting two girls being attacked in a public park by eight males.

Louise starts her night shift at the Operations Centre of Brisbane's Ambulance with a caller reporting that a man has appeared at his doorstep, having been stabbed in the chest by a samurai sword.

Dispatcher Sharon gets a call from a distressed daughter to say that her mother has gone missing after threatening to never come back. Alarm bells were raised when she failed to pick up her toddler.