The children are enchanted by the wilderness and happy to meet another family with four children staying at the pond. But the Aldens soon encounter a strange set of coincidences and mishaps that threaten to spoil everyone's fun. When one night they see a rowboat moving across the water with no one in it, they begin to wonder: Is the pond haunted, as the townspeople claim? The Boxcar children are determined to discover who -- or what -- is trying to scare everyone away!