Two surfers end up as Yellowstone park rangers and have to stop a former ranger who is out for revenge.

Teenage Andrea Carson who loves motocross, despite her father finding her unsuited for the sport, being that she is "just a girl". When her twin brother Andrew breaks his leg just before a big race, their father is forced to go to Europe to find a replacement rider. In the meantime, Andrea secretly races in Andrew's place with her mother's help.

Megan's world is turned upside down when she hears her calm life with her little brother and single mum is about to change. She hears she's soon to have a stepfather and a stepsister. Megan thinks they're a bit weird and is determined to stop the wedding. She discovers they're actually even stranger than she thought - they're from another planet.

Faced with the suspicious death of their father, two brothers must motivate one another to get back on their bikes and take the Las Vegas Motocross Championships by storm.

20 years after a set of events, the Time Enforcement Commission (TEC), is still going strong. Now Brandon Miller a TEC operative, believes that they have a responsibility to change history hoping that the world will be better but Ryan Chan another Tec operative stops him but kills the woman he loves in the process.