Button mash's father died two years ago. He still hasn't recoverd. His grades have been slipping, he's lost interest in his games, and the already shy stallion has become extremely reserved.
His mother is too busy trying to support them to notice anything but his grades, and so she is missing the true danger.
There is only one pony who can save him now. Rated Teen for a foul mouthed Spoiled Rich in the fourth chapter.