In this charming romantic comedy, childhood friends find themselves reunited as adults, discovering that the person next door might just be the one they've been looking for all along. When successful architect Seok-ryu (Jung So-min) returns to her hometown after a devastating career setback, she unexpectedly reconnects with her childhood best friend Seung-hyo (Jung Hae-in), a renowned architect who now lives in her mother's boarding house. Their long-dormant friendship quickly reignites, but their comfortable dynamic is tested by unresolved feelings, meddling families, and the complications of their intertwined pasts. As they navigate the messy terrain of adult relationships, both must confront their own fears about love, failure, and starting over. With its warm, whimsical tone and relatable exploration of second chances, this series blends heartfelt moments with laugh-out-loud comedy as two people realize that sometimes the love you need has been living right next door all along.