Wanda is hosting this year's school harvest feast, but she is so busy promoting it, she forgets to get the food! Luckily, Ralphie happens to know of a farm that grows the finest produce around, but there's a problem: he thinks it's haunted! There are tractors driven by ghosts, plants that climb walls, and so many robots! Could the spooky discoveries actually be helping the farm?

Based on the Magic School Bus series [created by] Joanna Cole and Bruce Degan.