"Crank: High Voltage" picks up right where the first one left off, with Chivel falling from a great height, yet surviving, only to be kidnapped by mysterious Chinese gangsters. Three months later, Chivel wakes up to find his virtually indestructible heart has been replaced by a battery-operated one that requires regular shaking to function. After escaping from these gangsters, he's on the run again, but this time he faces Mexican drug lord El Haron and an Asian crime syndicate led by the centenarian Pun Dawn.