Moxen is a socially awkward, bullied high-school teenager enduring puberty while his mother hides a family curse, hoping it skipped her generation. Descended from a notorious nineteenth-century scientist, Moxen transforms into Melia, a separate entity and his complete opposite: a bold partygoer and athletic jock. They are two halves of one coin, and stress or a heightened heart rate triggers the transformation, making high school even harder.