While unloading groceries in her Rock Haven condo, Karen McKay notices a strange swirl of red, green, and blue dust. The swirl follows her inside, lifts a porcelain ballerina from her wall unit, twirls it in the air, and throws it to the floor, shattering it into pieces.

The following evening, Karen hears her neighbor's dog barking loudly. Upon investigation, she finds her neighbor, Marion, at the bottom of the stairs dead. At the top of the stairs, a colorful whirlpool of dust circles ominously.

Now the feisty librarian must consider the unthinkable: Could the dust be responsible for her neighbor's death and, if so, would it kill again? Karen turns to her ex-husband, Jerry, for help and together they bravely confront the mysterious dust. But will their daring actions cost them their lives?