Alfaguara Infantil y Juvenil
89 pages : color illustrations ; 21 cm
"After a well-deserved winter break, Lulu returns to school and notices that many things have changed: her friend Luna doesn't laugh at her jokes anymore and rumors have spread throughout the school about her classmates creating an Instagram account for the sole purpose of bullying. In addition, Miss Marta announces that two new students will be arriving soon, and nobody seems to be happy about it. Can Lulu do something to make everything go back...