Margaret and Casey Brewer are starting to seriously worry about their father. Dr. Brewer has locked himself in the basement, conducting strange, secret botany experiments that he claims are completely harmless. But when the siblings catch a glimpse of the massive, breathing plants growing downstairs, they know something is terribly wrong. Their father is acting bizarre, developing weird, plant-like tendencies and strange new habits. You will be on the edge of your seat as Margaret and Casey investigate the terrifying jungle growing right beneath their feet. The vines are slithering, the leaves are snapping, and their dad is definitely not himself. Prepare for a chilling mystery as the kids try to uncover the truth about the basement experiments. They must work together and use all their courage to stop the aggressive greenery before it completely takes over their home and their family.