Colombine finally wants to know who her father is. But her mother vehemently refuses to tell her. With the help of Mathilde the greengrocer, Colombine obtains a magic potion that transports the 13-year-old several months back in time to the "Fête des Vignerons" wine festival in Vevey. There, Colombine must summon up all her courage to uncover the secret of her father.
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