Johnny Splatter accumulated as many hit records as he did enemies on his climb up the fame ladder. His sudden death, ruled a suicide, brings a small circle of professional parasites and hangers-on to his Hollywood Hills mansion for the reading of his last will and testament. But as his “frenemies” come to pick the bones clean, Johnny has returned for a deadly encore long after what they thought was his final curtain.

When Iori Kitahara heads off to college, he decides to live at his uncle's dive shop in Izu named Grand Blue. Iori is looking forward to experiencing college life amidst the roar of the waves, the blazing sun, and his cute cousin who lives with him! However, Iori runs into a group of tough guys playing strip rock-paper-scissors, and ends up joining Peek-a-Boo, the college's diving club!

After being pulled into the webtoon world created by her father, a surgical resident gets entangled in a murder mystery involving the story's hero.