A vulcanologist arrives at a countryside town recently named the second most desirable place to live in America and discovers that the long dormant volcano, Dante's Peak, may wake up at any moment.
Dr Tuttle uses the Doppelganger to breach a mirror, letting Dragora, Dabble and Swanson into the people world. Dragora uses this opportunity to get revenge on Mary Margaret, by way of having her over for tea.