Original: 엄마친구아들
A woman attempting to reboot her life returns to Korea and becomes entangled with her childhood friend — with whom she shares a complicated history.
Soon-to-be-wed Bae Seok-ryu returns to Korea and runs into her old friend Choi Seung-hyo. But she acts strangely around him, hiding a secret.
Even as her loved ones ask for an explanation, Seok-ryu hides her vulnerabilities until a confrontation with her mom forces Seung-hyo to come to her aid.
As Seok-ryu adjusts to unemployment, she faces anxiety about her stagnant life. Seung-hyo clashes with his partner after a tense business meeting.
When Seok-ryu's old company presents a promising opportunity, she and Seung-hyo collaborate. Later, an unsettling encounter leaves Seok-ryu rattled.
Seung-hyo starts acting awkwardly around Seok-ryu as old feelings resurface. To complicate things further, he faces a delicate situation at work.
Seok-ryu explores a new career path, tapping into a childhood passion. However, her family faces a crisis when her father's secret comes to light.
A figure from Seok-ryu's past appears, leaving those around her looking for clarity — including Seung-hyo, who navigates his own complicated feelings.
As the truth finally comes out, Seung-hyo waits for Seok-ryu's response. Meanwhile, Seok-ryu's parents discover her new endeavor, sparking their fury.
As Seok-ryu deals with an ailment, Seung-hyo and Song Hyeon-jun compete for her affection. But soon, Seung-hyo discovers the real reason for her return.
Seok-ryu's secret comes to light, leaving her loved ones struggling with the shock. When she goes missing, Seung-hyo desperately sets out to find her.
Seung-hyo awaits Seok-ryu's genuine response as time passes since his confession. But suddenly, he receives a shocking announcement from his parents.
Seung-hyo and Seok-ryu try to navigate their relationship dynamic. Soon, feelings of jealousy arise, and they struggle to resolve a fight.
As their relationship blooms, Seung-hyo and Seok-ryu struggle to keep their status a secret. Jung Mo-eum finds out what's behind Kang Dan-ho's coldness.
Seung-hyo takes it into his own hands to encourage Seok-ryu's cooking ambitions. Convinced it's the right moment, he asks her an important question.
Seung-hyo and Seok-ryu face their parents' wrath after their secret is revealed — pushing the tension between their mothers to a boiling point.
Seung-hyo and Seok-ryu, happy in their relationship, prepare for a lifetime together. They inspire each other as they work toward their personal goals.
