Where is Grandma Helena? She's not answering her messages. Lucía has little information and many questions. To find out the truth, along with her best friend Alejo, she faces a series of scientific challenges, where things aren't always what they seem. The most innocent clues can hold important secrets or precise instructions. They are determined to reach the end of the mission… or at least… reach the next clue!

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Ficha técnica

Págs: 112

ISBN: 978-631-90719-6-2