Stepbrothers Chip and Dave go back in time to 1885 and get entangled in a crazy Wild West adventure. Teaming up with two awesome local girls, they face off against the town's evil mayor and try to find a way back to the present.

Chip and Dave go back to the Wild West to fix the mess they caused first time round. They reunite with their old friends to try and outwit the sinister Purple Hat Gang and their shadowy leader.

Chip is stranded in the Wild West and it's up to Dave to rescue his bro. With help from some unlikely allies, can they save the day once and for all and put the future right?