Kyungsoo is a shy and nerdy medical student. When he runs into an old classmate, Baekhyun, he realizes that he wants more from life. He makes an impulsive decision to go with Baekhyun on a trek in the Himalayas. During the hike, he reconnects with other former classmates,Jongin and Chanyeol. Jongin teaches Kyungsoo to laugh and play, and he falls in love with him. However, he doesn't reveal his love, as he wants Jongin to follow his passion of traveling. Eight years later, they meet again in Seoul for Baekhyun and Chanyeol’s lavish wedding. Jongin and Kyungsoo's love is rekindled.Will their love work out this time?