Two Player Time Machine (bmc time travel AU) [BMC meets Little Shop]

On the twenty-first day of the month of September, in an, I guess, early year of a decade the same as our own (unless you're reading this in the future then, hello from the past!), two teenage boys suddenly encountered a deadly threat to someone's very existence. And they found this terrifying enemy, - as most boys often do - in the seemingly most innocent and unlikely of ways.