Daniel "Dan" Kwan and Daniel Scheinert, collectively known as Daniels, are a duo of film directors and writers. They began their career as directors of music videos, including the popular DJ Snake promotional for the single "Turn Down for What".
The story tracks a group of young friends backpacking through Italy who come upon a travel guide called “The Book,” which promises unique off-the-beaten-path adventures. However, they get more than they bargained for when The Book leads them into the clutches of a demonic cult.