The Aldens are helping the owner of a local restaurant grow delicious food in a garden. They work hard to water and weed and take care of the fruits and vegetables that are growing. But soon the children notice the strangest thing_the plants are moving. The tomato plants aren_t in the same spot they were planted in! How could that be happening? Then, when fruits and vegetables start to vanish from the garden, it_s clear that a brand new mystery is sprouting for the Boxcar Children.