Neo-Marauders and the Chamber of Secrets

The Neo-Marauders enter their second year at Hogwarts. New friends, old enemies, new secrets, and a seemingly invisible enemy, one that's mere presence threatens to get the school shut-down, awaits them. The friends struggle with trying to suss out the riddle of the castle, while trying to keep up with school and the general weirdness of Hogwarts. And what's up with the Headmaster?