Ari and his friends can't resist a challenge. Rumor has it there's some kind of monster living in the local abandoned warehouse who devours anyone who steps foot inside. Ari doesn't believe the gossip and accepts a dare to enter the building. But as soon as they set foot in the warehouse, all of the doors lock behind them and they come face-to-face with the beast itself! Can Ari and his friends escape the warehouse? Or will the monster win this game? Read and find out in the first book in the Diary of a Roblox Pro series!