The day her grandmother goes missing is Mercy's last day as a 'normal' teen. First, she discovers she's a witch and a cat has been appointed her guardian. She enrolls in witching lessons as dispensed by Darynda, her trainer on WTC (The Witch's Training Channel). Greg, the boy she likes, asks her out, but a girl who has bullied her since grade school is jealous. Mercy's powers are out of control. Will she find a way to bring her grandmother back, as well as the bully she accidentally evaporates after an ill-fated school dance? Will the Witches Council, cause her two best friends to forget they ever met her because she violates an oath she never took?