When The Phone Rings is a mesmerizing romantic thriller that masterfully intertwines suspense with emotional depth. It tells the story of Baek Sa Eon, a stoic yet enigmatic figure, and Hong Hee Ju, a resilient woman battling selective mutism and a haunting past. Their relationship evolves amidst a backdrop of mystery, love, and healing, as Hee Ju’s veiled threats and Sa Eon’s protective instincts unravel secrets that bind them together. The show balances a slow-burn romance with gripping tension, delivering powerful themes of trust, growth, and vulnerability. With its poignant storytelling, dynamic character arcs, and atmospheric visuals, it leaves a lasting impression as both a love story and a captivating thriller.