Woo-hyun is a Korean man who still harbors emotional scars from his first love, while Haruka is a Japanese woman who wants to find out the answers about love. Despite living in different countries and speaking different languages, their paths cross when they begin receiving messages from each other through their mobile devices. As they share their daily lives, vulnerabilities, and hidden pasts, an unexpected romance blossoms across the distance. Throughout the series, the narrative explores the healing power of connection in the digital age. Both characters struggle with their respective emotional baggage, finding solace in the anonymous yet deeply intimate nature of their messaging. Through shared memories, misunderstandings, and ultimate honesty, Woo-hyun and Haruka learn to open their hearts again, leading to a fateful encounter that changes their lives forever.