Tito is a shy ten-year-old boy who lives with his mother. All of a sudden, an unheard of epidemic begins to spread-people get sick as long as they feel fear. The epidemic spread throughout the city, society was in a panic, and infectious diseases were becoming more and more rampant. Tito soon discovered that the treatment for the disease had something to do with his missing father's study of bird calls. He and his friends-the strong and intrepid Sarah, the simple and modest Buy, the arrogant but helpful rich boy Theo and his entourage-embarked on a journey to save the world. Tito's research on the antidote is also a process of finding the missing father and personal identity, and Tito's relationship with friends, family and opponents is also the highlight of the film.