AS continuing education becomes a challenge to the Grade 11 STEM student, Sigrid Abigale Marquez-she has no other choice but to knock on the doors of possible establishments to sponsor her studies at the renowned school of Bellatrix High. But with every door closing upon her, a mysterious offer from an enigmatic organization believed to have been dissolved many years ago came into her open windows, The Irregulars. To acquire a scholarship grant, however, Sigrid must fulfill one strict condition: to undergo elective classes as a student detective.

Three detectives. Series of missing students. A school with dark secrets... and someone doesn't want that secret to be revealed. When the new semester started, Solana Fernandez was met with feeling of unfamiliarity towards herself. As someone who has a wide interest over a lot of things, she still feels purposeless and in need of something to commit to while in high school. But her perfectly normal high school life changed when she became involved in the mysterious disappearance of students inside her own school. Driven by the desire to know the truth behind the case, she decided to join the once renowned campus detectives called The Bellatrix Irregulars. Little did she know that the missing puzzle pieces she strives to find paints out a picture with a bittersweet twist.