Roleplay series. Six children become Cadets at a hidden high-tech emergency response centre. The children must quickly assess and resolve a major emergency, under the watchful eye of mentor 'The Commander', weighing up interactive briefings and video field reports. A series of devastating twisters threaten towns in the USA's Tornado Alley. The cadets must use storm spotters to track the tornados, evacuate towns in their path and direct rescue operations once the deadly cyclones have passed.