The stage is set for the siblings' romantic retreat! The siblings embark on a whirlwind romance with their dream partners alongside their siblings; they struggle to maintain composure upon witnessing their siblings' romantic endeavors.

Siblings complete moving into the house while keeping their identities hidden; they fail to manage their expressions on just the second day of their stay after encountering the flirting scenes of their siblings at the bowling alley.

The first dates are arranged based on Cupid's messages that the siblings delivered; the confirmed couples for Cupid's dates are Yong-woo and Cho-a, Jae-hyung and Yoon-ha, Jung-sub and Se-seung and Chul-hyun and Ju-yeon.

At the intersection of affection and curiosity, where do the hearts lean? If they pick up the phone simultaneously, they'll go on a date! Will they be able to go on a date with partners they want? The random date match by phone calls continues!

From cute excitement to awkward feelings, the siblings go through various emotions while gradually falling for their partners; they hear about their siblings' dates and doubt what they hear! In the end, misunderstandings spread in their hearts.

The siblings, armed with their keen eyes, choose partners for dates in Gangwon-do; Can Yoong-woo and Se-seung, who understand each other, start a new relationship? Jung-sub and Cho-a share honest and secretive conversations just between them.