WARNING! This story, DOES, have spoilers for the first and a tiny bit of the second games in the series so be careful when reading.
Serenade Stereo never had much 'luck' in his life. There was never a dull moment at least.
One day he receives a letter from the mysterious 'Hope's Peak Academy' explaining that they had seen his work and would like him to attend their school as one of the 'Super High School Level' students.
As he crosses the gate he passes out and wakes up with 15 other ponies his age also accepted for their talents as 'Super High School Levels'. They soon learn that they aren't there for their talents at all, but to be forced by a demonic creature that goes by the name 'Monkuma' to live in his 'School Life of Mutual Killings'...