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 revolves around Kenzo Tenma, a Japanese surgeon living in Düsseldorf, Germany whose life enters turmoil after getting himself involved with Johan Liebert, one of his former patients, who is revealed to be a psychopathic serial killer.