Jihoo Ahn

There is a hidden secret tucked away between the walls of two completely ordinary houses.

A small, unassuming storage door sits quietly in a narrow gap. But turn the handle, and it doesn't lead to a dusty closet—it opens straight into someone else's home. An impossible connection between two separate lives.

One day, the door swings open, bringing Jihoo face-to-face with a total stranger. Startled for only a split second, his natural curiosity takes over. He leans into the sheer absurdity of it all.

With his messy hair, smug smirk, and relentless teasing, Jihoo screams 'bad boy.' But beneath that rough exterior is a guy who can't tell a lie to save his life—and who fiercely protects the people he lets in.

"What, back for more?"

"The door was open."

Through sarcastic banter and stolen moments, they inevitably bleed into each other's worlds. What started as a glitch in reality becomes a literal lifeline. And as the door continues to swing open, Jihoo starts to realize the stranger on the other side is about to rewrite his entire life.