Heart Signal 4

Heart Signal returns with Yoon Jongshin, Lee Sangmin, Kim Eana, Kang Seungyoon, Mimi, and Kim Chongki. Six new occupants are unveiled, and Signal House is filled with excitement. Someone's words spark a flirting war as a prelude to a storm to come.

Signal House's first date is disguised as a grocery shopping trip. The men and women get to know each other within a short time. The occupants soon reveal their ages and occupations, which leads to a great twist that no one expected!

The occupants of Signal House go to work for the first time since moving in. They slowly begin to affect each other's lives and build close relationships. Where are their love signals headed after realizing each other's inner thoughts?

The first dates officially begin. The pairs get to know each other, and feelings bloom between unexpected partners. As Signal House experience changes in emotional trajectories, the occupants have a late-night gathering. How have the first dates affected the occupants?

It is the second weekend, and the occupants have an outing. The women request a one-on-one talk with the men to share their honest feelings over drinks. Texts reveal a shocking twist, and the love signals continue to jumble up.

The occupants are invited to a secret party. Everyone is anxious as the identity of the last occupant is revealed. The love signals of three men point toward one woman, but her heart is directed elsewhere. Will they be able to communicate their feelings amidst all of these mixed signals?