5 years is enough to make old memories and feelings resurface. After the devastating disbandment of the popular boyband, SHINee, the member's relationships were all affected. But more so, 2min. After the heart-shattering breakup of the young couple, the small maknae decides to refocus on studies and decides to enroll in medical school. After years of successful schooling and training, he then becomes an aspiring neurosurgeon. To fill the longing ache in his heart, he adopts an orphan by the name of Jung Yoogeun, that resurrects his heart after it sank.

After the disasterous 2min breakup, the flaming charisma rapper known as Choi Minho, takes a new leaf and moves to America because of his oppression by Taemin and begins a path in the medicine career also. He began to go under the impression that he finally moved on and marries Kwon Yuri, to distract himself of Taemin and his loss. But what happens when the maknae is requested to work in America with a certain flaming charisma? What could go wrong?  Better yet, what could go right?