The tiny clothes moth Teca lives with her family and pet dust mite in a sewing box. What they love most is to eat paper, but when Teca learns to read, she notices that books cannot be eaten; after all, they keep stories that she loves. Committed to solving a great mystery, Teca and Tuti part towards the library, searching for the most important story of their life.
The series takes place seven years at the head of the Traditional Monica Gang, serving as a conception of the characters' future.