
Jun Jung was never a bully—but he was never a hero either. As a silent bystander, he watched his classmates torment Soorim Sung, a transfer student at Bukak High School, without intervening. Six months later, Jun’s entire class is selected to participate in “Abyss,” an exclusive escape-room experience held aboard a ship. What begins as excitement quickly descends into terror when the students realize the mastermind behind Abyss is seeking blood—and justice. Trapped at sea, Jun and his classmates are forced to confront their past actions as guilt, fear, and survival collide in a deadly game.
Abyss Cruise is merciless in its premise. It doesn’t ask who pulled the trigger—it asks who stood by and watched. By placing the spotlight on a bystander protagonist, the series explores complicity in a way few survival thrillers dare.
The ship setting heightens the tension, stripping away any illusion of escape. Each puzzle isn’t just a test of intelligence, but a reckoning with memory and responsibility. The horror lies less in physical danger and more in the realization that silence can be just as destructive as cruelty.
This webtoon is ideal for readers who enjoy psychological thrillers, moral dilemmas, and survival games that punish the conscience as much as the body. Abyss Cruise proves that sometimes, the deepest abyss is guilt.