After the turbulent events of the last episode of It's Okay to Not Be Okay, Ko Moon-young and Gang-tae prepare to return from their trip. However, in light of the recent events, they decide to move to a new house, seeking safety. The scars of the past remain open, testing the resilience of their relationship, while an enigmatic shadow begins to approach, immersing them in a journey filled with mystery and haunting.
During this process of starting over, they cross paths with Bae Seok-ryu and Choi Seung-hyo, a couple on the verge of sealing their commitment, as seen at the end of The Love Next Door. However, like the protagonists, they too face their own storms: exhausting work routines, the challenges of building their dream house, and unsettling nightmares that haunt them. United by an uncertain fate, both couples find themselves tangled in a web of mysteries and trials, testing their bonds and leading them down a path full of tension and revelations.