Set in the quirky halls of Hello High, a seemingly normal high school with an absurd twist – every teacher is a former detective and students are notorious for their wild theories. When the school's mascot, a giant inflatable hello, goes missing before the Homecoming game, it's up to you, the new transfer student with a knack for eccentric puzzles, to uncover the culprit. Engage in witty dialogues, form alliances with other students, follow leads, and navigate through bizarre high school shenanigans to solve the mystery and reclaim Hello High's pride.