Thomas returns home to save the hemlock forest he and Grandpa used to frequent and finally makes some friends in his real world. But he still misses his Terracolina buddies and returns for a visit. What he discovers is shocking. Not only have the Olgrots attacked again, but an aggressive vine is strangling the garden.
This time he alone can't stop the tragedy unfolding in Terracolina. His real world friends have just the right skills to help out.