(INTRODUCTION)

The story of an elite investigation unit SIS (Special investigation service) which is responsible to solve mysterious cases.. The SIS is led by two professional strong policemen along with a criminal psychologist and a forensic expert...
The four cousins living in a joint but small family and acted very differently as professionals in a field and as sweet brats in the family.....
Okay now, I am writing this type of story for the first time and I hope it went well further..

The characters are from Guardian and SCI the legenday shows...