Mandatori centers around Norman (Aeril Zafrel), a preternatural police detective with the ability to use his ‘imagination’ to visualize and subsequently solve a crime scene. Things take an odd turn, however when he discovers later on that he is unable to his ‘powers’ anymore. Time is not on his side, as the city of Banda Raya falls into a deeper abyss as more mysterious occurrences come to unfold.

Mengisahkan tentang seorang ‘profiler’ jenayah, Inspektor Norman (Aeril Zafrel) yang menyiasat kes pembunuhan bersiri yang dilihat berkait rapat di antara satu sama lain. Ia membuka kembali kes-kes jenayah yang berlaku beberapa tahun lalu dan lebih merumitkan apabila setiap siasatan yang dijalankan Norman akan membawa beliau kepada sebuah lagi kes pembunuhan baru.