Tina, who lives with her family on the Martinshof, receives a visit from her best friend Bibi during the summer holidays; but it hasn't rained in so long that the fountain has dried up and the guests stay away.

Bibi and her best friend Tina pay a visit to Alex, who is shooting a report on the subject of "mermaiding" at the lake; Bibi is annoyed because Chico has to accompany the girls on their outing.

For weeks it was way too dry, but now it's finally raining again; now two young social media influencers decide to take a vacation at Martinshof; Bibi and Tina have to try to present the farm positively.

Count Falko decides to hunt the wild boars, which repeatedly cause chaos; Alex, Bibi and Tina absolutely want to prevent this from happening, but when Chico takes the count's side, they are shocked.

After a riding accident, Tina can no longer remember her crush on Alex; instead, her amnesia causes her to fall for Chico.

Bibi and Tina have suspected for a long time that Chico is not telling them the whole truth; that's why they're planning a game night just before a super moon; in a game of truth or dare, they finally uncover Chico's secrets.