"Shall I make sure you're not bored?” Yeo-eun makes a living working as a quick-service courier. While delivering documents to a secluded mansion deep in the mountains, she comes face to face with a beautiful man named Tae-hee dragging a corpse, covered in blood. “Why don’t you stay the night and head out tomorrow?” Trying to escape this mysterious man who insists on keeping her there,Yeo-eun flees into the snowy mountain…only to end up in an accident. Until her leg heals and the snow melts, she finds herself stranded alone in the mansion with him. "Shall I make sure you're not bored? " Worn down by loneliness, Yeo-eun can’t help but fall for Tae-hee’s gentle kindness…even though she knows he might be dangerous. But when she finally uncovers a truth, she never wanted to believe, Yeo-eun must make a choice.