In 'Hello, Who's Calling?', you play as Alex, an ordinary office worker whose routine is abruptly shattered when they receive a mysterious phone call from an unknown number. Each phone conversation leads you down a rabbit hole of unexpected twists as you uncover a web of conspiracy involving office politics, espionage, and bizarre characters all vying for control over a dangerous secret. The choices you make during each call will shape the direction of the story, ultimately leading to multiple endings. Can you untangle the truth before it's too late, or will you find yourself entangled in a web of lies?