They say love has its own language and these men and women of the Signal House will live together in one house to find someone they like. Problem is, they can't say the words "I like you" nor can they share deciding factors about themselves. Essentially, they're left to send their own indirect signals to the one who catches their eyes, and hope that person will pick up on the hint. But they aren't the only ones keeping a close eye: celebrity panelists ONE (rapper Jaewon), Soyou (Sistar), Lee Sang Min (Roo’ra), singer Yoon Jong Shin (Running Man) and lyricist Kim Eana are paying close attention. It's their job to decipher the body language from the housemates' exchanges, and judge whether or not a relationship will transpire or not. So while the housemates are in it to find love, it's up to the panelists to guess who will end up with whom. Heart Signal 2 is the second season of the variety dating reality show Heart Signal.