Young call taker Antionette starts her shift at ESTA 000's ambulance call centre with a desperate call from a woman whose husband has just collapsed in the front yard and is now unconscious.

Call taker Luke starts his shift at ESTA 000's ambulance call centre with a call from a frantic mother, who has tripped and dropped her young baby.

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.