Long Gone (An Inside Out Fanfic)

After Joy was forgotten, nobody was the same, nobody stopped Riley from leaving San Francisco. After three subconscious workers attempted to replace Joy, a few months later, something strange is happening. Yellow glows are appearing in the subconscious, and the subconscious workers don't like it. Why don't they? Are the bright yellow glows forming a monster, or are the subconscious workers trying to hide something special that makes Riley, Riley? I guess we'll find out....