A South Korean heiress, Yoon Se-ri (Son Ye-jin), accidentally paraglides into North Korea during a storm and is found by a North Korean soldier, Ri Jeong-hyuk (Hyun Bin). While trying to help her return home, they fall deeply in love, facing dangerous obstacles and political tensions.
Go Eun-chan (Yoon Eun-Hye) is mistaken for a man due to her tomboyish appearance. Choi Han-kyu (Gong Yoo), heir to a coffee business, hires her to pretend to be his gay lover to avoid blind dates. Things get complicated when he starts developing real feelings for Eun-chan, unaware she is a woman.
Childhood best friends Ko Dong-man (Park Seo-Joon), a struggling MMA fighter, and Choi Ae-ra (Kim Ji-won), an aspiring announcer, gradually realise their growing feelings for each other while dealing with career setbacks. Their best friends, Joo-man and Seol-hee, face struggles in a long-term relationship.
Na Hee-do (Kim Tae-ri), a talented fencer, dreams of becoming a national champion despite financial struggles. She meets Baek Yi-jin (Nam Joo-hyuk), a young man who lost everything during the financial crisis and is trying to rebuild his life. Their paths intertwine as they experience love, friendship, and growth.
A charming and narcissistic CEO, Lee Young-Joon (Park Seo-Joon), is left shocked when his highly competent secretary, Kim Mi-so (Park Min-young), suddenly decides to resign after working for him for nine years. Determined to keep her by his side, he tries everything to change her mind, leading to an unexpected romance.
Kim Shin (Gong Yoo) is a cursed immortal goblin searching for his bride, who can set him free. He meets Ji Eun-Tak (Kim Go-Eun), a cheerful girl who can see ghosts and maybe his destined one. Along the way, he forms a bittersweet friendship with a Grim Reaper (Lee Dong-wook), who is also searching for his lost past.
Moon Gang-tae (Kim Soo-hyun) is a psychiatric hospital caretaker who dedicates his life to taking care of his autistic brother. He meets Ko Moon-young (Seo Ye-ji), a famous children’s book author with antisocial personality disorder. As they get closer, they help each other heal from their traumatic pasts.
Yoon Jin-ah (Son Ye-jin) is a successful woman in her mid-30s who falls in love with her best friend’s younger brother, Seo Joon-hee (Jung Hae-in), a video game developer in his late 20s. Their relationship faces obstacles due to family expectations, workplace discrimination, and societal judgment.
Do Bong-soon (Park Bo-young) is born with superhuman strength, a power that runs in the women of her family. She gets hired as a bodyguard by Ahn Min-hyuk (Park Hyung-sik), a wealthy CEO with threats on his life. As they work together, sparks fly, and romance blossoms.