In a whimsical world where voices travel through time and space, players take on the role of Echo, a charming but forgetful time-traveling librarian. Your task is to gather timestamps from fleeting voices that appear throughout the ages to solve the mystery of 'whose hello was that?' While hopping between different eras—from Shakespearean England to the Disco ’70s—you gather clues, interact with quirky historical figures, and decipher riddles that determine the origin of a peculiar haunting that interrupts the peaceful library life. The narrative twists based on the choices made, leading to unpredictable and humorous outcomes.