After being given a school project by his favorite teacher, Beckett, a math genius would find that his tinkering with an ancient artifact would have a profound effect on his life. Namely forcing him to jump to other universes blindly. Thankfully for him, he would have help along the way. Another version of himself who had done the exact same thing. Only a girl.
Despite their expertise, they will quickly find out that the universes that they go to are indifferent about any of their accomplishments. Only if they can survive long enough for the timer on their artifacts can run out so that they can escape before the dangers of these other realities before they snuff out their existence.
Along the way, they will face the facts that human life is fragile, and that their own life is just as minuscule compared to the forces across the multiverse if they do not stay light on their feet.
But Beck and his new companion Rebecca will not stop until they return to their families and discover the secrets of the multiverse. Although that is an endeavor that will not be so easy to uncover.