You and your sister Sarah had a really strong relationship until everything turned upside down. Sarah, your younger sister, never told you about the presence of a group of bullies in her school who bully her every day, until one day you found her committing suicide in her room. You discovered that there was a group of bullies in her school, Jason and his friends who did this, and you decided to avenge your poor sister's soul. Fortunately, your appearance is completely different from your sister.