Soon after he purchases a dusty can of monster blood at the funky old toy store near his great-aunt's house, Evan begins to notice some strange things happening to the people around him.

"Dr. Brewer is doing a little plant-testing in his basement. Nothing to worry about. Harmless, really. But Margaret and Casey Brewer are worried about their father. Especially when they ... meet ... some of the plants he is growing down there. Then they notice that their father is developing plantlike tendencies. In fact, he is becoming distinctly weedy--and seedy. Is this just part of their father's 'harmless' experiment? Or has the basement turned...

Samantha, the laughingstock of the girls' basketball team, meets someone who can grant her three wishes. But she isn't careful what she wishes for and they come true, turning her life into a living nightmare.

A young girl purchases the most frighteningly lifelike Halloween mask and then, to her horror, discovers that she is unable to remove it from her face.

After Kris gets a mannequin of her own because she is jealous of all the attention which a ventriloquist's dummy brings to her twin sister, horrible happenings seem to double.

Jerry can't wait to explore the dark, spooky old cave he found down by the beach. Then the other kids tell him a story about a ghost who lives deep inside the cave.