Despite the title, the Wishbone family are far from happy. In an attempt to reconnect as a family, Mum and Emma plan a fun night out. However, her plan backfires when an evil witch curses them, and they're all turned into Monsters.

Growing up in a small town, Charlie, Alex and Nick weren't the most popular kids around after they formed "The Elite Monster Unit". Chasing notorious, mythical legends and ghosts was exciting to them, not "cool" to the other kids ...