The Brewing Storm — Paul Ruditis

Earth, air, fire, water --
A child must bring them all together.
Calm the shaking, quell the slaughter
Tonight's the night -- it's now or never.

Despite wacky weather threatening the San Francisco area, life for the Charmed Ones is as normal as ever. Normal, that is, until eleven-year-old Tyler Michaels shows up at their door. Tyler, a Firestarter, is on the run from demons. Though the Halliwell sisters have dealt with Tyler before, a glance at the Book of Shadows turns up new, unexpected information about the boy...and the forces for which his magic can be harnessed.

Once a century the planets align in such a way that the tides shift and the climate changes, causing unpredictable weather and earthquakes. With the world out of balance the Fire-starter is charged with gathering the other Elementals on the Night of Aeolus to perform a sacred ritual. Without this ritual the weather will eventually tear the world apart. But the demons chasing Tyler want to divert the Elemental power and channel it for a dark evil. The Charmed Ones must prevent this from happening at all costs -- but the Night of Aeolus is already upon them....