Another illuminating adventure for everybody's favourite teenage witch! Sabrina sends herself back in time to get some academic help from Thomas Edison. But Tom is feeling down in the dumps and miserable, wondering if his inventions will ever amount to anything? Sabrina takes Tome to the 21st century to show him how important his inventions are, but once there he refuses to go back in time! Can Sabrina convince Tom to go back before the future's left in the dark?