Mildly hapless Edinburgh accountant Gwenllian Maule is surviving. She's got a boyfriend, a rescued pet bird and a flatmate to share rent. Gwen's biggest challenges: stretching her last twenty quid until payday and not antagonizing her terrifying boss.

Then Gwen mistakenly drinks a mysterious beverage that gives her heightened senses, accelerated healing powers and astonishing strength. All of which come in handy the night she rescues her activist neighbour from a beat-down by political thugs.

Now Gwen must figure out what else the serum has done to her body, who else is interested and how her boss is involved. Finally—and most mysteriously—she must uncover how this whole debacle is connected to the looming referendum on Scottish independence.

Gwen's hunt for answers will test her superpowers and endanger her family, her friends—even her country.