A singing competition guessing game based on Korean format King of Mask Singer. 12 celebrity performers wear costumes to conceal identities. One singer is eliminated each week and unmasked. Small hints are given for the viewer guess along.
Daimon and Ana Helstrom are the son and daughter of a mysterious and powerful serial killer. The siblings have a complicated dynamic as they track down the terrorizing worst of humanity - each with their attitude and skills.