Maryjane and Victoria, aka MJ and Vicky, two students from Santa Monica High School located a few steps from Pacific Palisades are the best friends in the world. They lived everything together : from the first sorrows of love, to the greatest joys and disputes... This year in high school being the last, the girls decide to make the most of it !! Despite the fact that each follows their respective lessons, they decide to maintain their link via post-it notes left in a common locker. Selfies, pictures of their crush and their favorite singers... Everything is there !! All the same, what idea had Miss Stanfford to ban the use of telephones in the establishment... But while this locker becomes a central point in the relationship of the two friends, an element disrupts their quiet little routine... Maryjane finds it with the door slightly pressed, a new padlock... and discovers a post-it note of unknown handwriting protruding below !! "Your locker had a small accident because of me... Sorry :/ Here is a new padlock which code will be 2212. Nice pictures, by the way ;) Anonymous." It doesn't take more for the two friends to give in to panic... However, they ignore that this strange post-it note will be the first of a long series between them and this "Anonymous", thus creating a special link... Our two teenage girls therefore decide to carry out the investigation when an objective seems obvious to them : find the identity of this mysterious person !! Thanks to a few clues left and by dint of patience, will the two best friends discover who is hiding behind these few words written on sticky notes ?