

During a hiking trip, Zein and her friends discover Hell University, a school they thought was abandoned. When night falls, they witness the Bloody Night, where murder is legal. Trying to leave, they learn the only rule once you enter, there is no turning back.

After Rouge Silvenia’s death, Zein begins investigating the two ruling gangs of Hell University the Black Blood Gang and the Devil God Warriors. Her search leads her to Supremo, the feared student president, who takes a dangerous interest in her.

After Matt is put in danger, the group searches for answers about Hell University’s dark past. Zein discovers the SSG is looking for a new secretary and clashes with former secretary Fritzy, while the administration announces an upcoming acquaintance party.

Zein and Dave are rushed to the clinic after being poisoned, where a mysterious girl in a red hood offers to help. As questions grow, Ace Craige approaches Zein again, pushing his offer for her to become the SSG secretary.

Fritzy refuses to accept being replaced, while Ace orders everyone to respect Zein as the new SSG secretary. Zein witnesses the brutal fate of those punished by Supremo, and a mysterious, nerdy classmate suddenly takes an interest in her.

Zein clashes with Roxane, the Queen of Hell University, and earns a punishment from Supremo. As tensions rise, she also comes face to face with Raze Silvenia, the feared leader of the Devil God Warriors.

Zein grows suspicious as Matt, Dave, and Jerome start sneaking out during Bloody Night. As Mr. Francisco announces the start of Bloody Week, panic spreads across the campus, and Supremo presents Zein with a mysterious gift.
Bloody Week begins, and deaths rise across the campus as Zein tries to save as many students as she can. Amid the chaos, she spots Supremo getting close to a girl named Angelica and feels a strange, unexpected irritation.