Mysteries follow Mэйзи everywhere! The whole town gathers to open an ancient time capsule, but at the crucial moment it turns out it has been stolen. Who could have done it, and for what purpose? Young sleuths Sophia and her team immediately get to work. However, they have competitors—twin siblings who are determined to uncover the secret first and win fame. Following the clues, they find themselves in the thick of dangerous adventures, encounter suspicious people, and are constantly watched over by a mysterious masked girl. Who is she, and why did she choose Sophia? Will they be able to find the capsule, outpace the competitors, and reveal the main mystery that could change everything? Join the investigation!