O'PENing

Dream, a student studying to retake the college entrance exam, meets Yi-soo, the owner of an online adult-good shopping mall and once a student at Hanguk University, on the rooftop. Yi-soo offers to tutor her math, and in exchange, Dream works part-time for Yi-soo's business as a customer service employee. After one incident, Yi-soo shuts down the online business and instead goes around the nation with a truck stocked up with adult products to sell. Dream and Soo-chan join him on this road trip, and the three's odd journey begins.

Soon-jae is left alone after his wife, Gwi-ae, suddenly dies. His only son, Min-sik, tells him he will soon emigrate to Jakarta with his family and that Soon-jae will be coming with them. Meanwhile, Soon-doongyi, the ugly stray dog that his wife used to take care of, starts grabbing Soon-jae's attention. He takes him to the vet, where the veterinarian tells him to walk this dog every day. As troublesome as it sounds, walking the dog turns out to be more fun than he thought, so Soon-jae decides to take Soon-doongyi with him to Jakarta, but his family says he can't. What is Soon-jae supposed to do with this sick, old dog?

In-joo, who had lived a lonely, abandoned life, encounters Jin-do, a bright, warm-hearted man. Jin-do is the first person in her life who takes care of her and gives her love. For the first time in her life, In-joo dreams about being happy for once. But now, In-joo has one last request: she wants Jin-do to let her go, like a summer cold that people have no regrets after suffering.

Won-young and Ki-joon met at a random birthday party for the first time. The two somehow ended up spending the night together, but went separate ways the next morning without turning back. However, they both didn't realize that birthdays happen every year. A year later, they meet again and start spending more nights together. Then suddenly, Won-young proposes to live with Ki-joon.

A year after Hae-sook's death, Ha-gu decides to reopen her mother's supermarket. One day, she meets Kang-soo, who turns out to be the one ruining all her peaches at the fruit stand. When Ha-gu caught him in action, out of nowhere, Kang-soo blurted out Hae-sook's name. Reminded of her mom, Ha-gu opens Hae-sook's old journal and finds traces of Kang-soo. Through encounters with Kang-soo, who has Alzheimer's, Ha-gu uncovers new truths about her mom and starts to understand Hae-sook's life not only as a mom but as a woman.

One day, Hyun-soo discovered a little girl trapped inside a house through a window in one neighborhood. There, she meets Min-ha and starts hanging out with her every day at 2:15 p.m. for exactly 15 minutes before Min-ha's scary dad returns home. Min-ha has one wish: to go to the playground. And meanwhile, Hyun-soo's mom decides to send her to Canada, where her aunt is. Therefore, Hyun-soo decides to take Min-ha to the playground for the first and last time, but the two weren't aware how much this day would make them miss each other.

Kyu-jung was once a rifle genius but got involved in match-fixing in exchange for money to protect both her dream and her sick brother. However, she regrets this choice so much that she is stuck in the past and not able to move forward in her life. Seven years later, Kyu-jung slowly brings her longing for the rifle back to life, and with Da-woon, her past rival, and Si-yoon, her old fan, she gains the courage to start shooting the rifle again.

Kyu-jung was once a rifle genius but got involved in match-fixing in exchange for money to protect both her dream and her sick brother. However, she regrets this choice so much that she is stuck in the past and not able to move forward in her life. Seven years later, Kyu-jung slowly brings her longing for the rifle back to life, and with Da-woon, her past rival, and Si-yoon, her old fan, she gains the courage to start shooting the rifle again.