On Valentine's Day, Tara received many valentines: from her brothers Petya and Mouse, from her friends Fritzi and Yul, and one from... a mysterious sender! Who wrote it? Tara decides to find out, and to do this she needs the help of her best friend Tineke. But she makes friends with other girls and doesn’t want to help Tara! What to do now?! Will Tara be able to make peace with Tineke and find out the name of the mysterious sender of the Valentine's card? Kirsten Boyer is a world famous German writer. The German Youth Literary Award, nominations for the Hans Christian Andersen Prize, the UNESCO Prize - her awards are countless! Kirsten Boyer's books are adored by readers from different countries; films and animated series are made based on them. The writer always takes the child’s side, and her stories are a hymn to childhood. The “Children from Seagull Street” series has been repeatedly noted in the list of the 7 best children’s books according to German Radio.