Bibi’s summer vacation at her best friend Tina’s starts in quite a turbulent manner. The Martin’s farm doesn’t have enough water anymore! The town of Falkenstein is living the results of climate change. Surely Bibi and Tina have to do something especially against Kim Win Win’s plans to dig for gravel in the region. Not only Alexander helps them, but also Chico, the young Spanish boy. He wants to do work and travel in Falkenstein and Bibi seems to like him more than she admits. But Chico seems to have a big secret. When a heavy storm arrives and a horse is about to give birth all hell breaks loose.