Our Happy Days

Eun Ae, struggling with her AI project, finally finds hope as she secures a major investment offer.

Terminally ill Kang Su summons Gyeol to Korea while Ji Hun confesses his love to Eun Ae after a secret deal.

Eun Ae is shocked by the blocked server and Kang Su's family is unsettled by Gyeol's sudden return.

Gyeol mistakes Eun Ae for a pickpocket, and Kang Su prepares a major announcement for his family.

Kang Su declares a succession race for Kangsu Group, and Eun Ae visits the office to reclaim her company.

Gyeol starts working at Kangsu Construction to compete with Min Ho and Eun Ae begins a protest to reclaim Joy.

Eun Ae finds her father working as a cleaner at Kangsu Construction and Gyeol starts working as the TF leader.

Eun Ae receives a notice from Kangsu Construction and seeks help to reclaim Joy after her failed negotiation.

Eun Hyeong faces a crisis, and Eun Ae helps Yeong Hwa, then sneaks into Kangsu Construction to reclaim Joy.

Eun Ae is detained for sneaking into Kangsu, and Seong Jun tries to settle the matter without Yeon Ja knowing.

Gyeol offers Eun Ae an internship at Kangsu, and Yeon Ja begins to grow suspicious of Seong Jun's behavior.

Eun Ae and Seong Jun confess the truth to Yeon Ja, and Eun Ae starts her first day at Kangsu as an intern.

Eun Ae demands her share of the money from Ji Hun, and Seung Wu carries out his revenge against Eun Nim.

Yeon Ja is upset over Eun Hyeong's unemployment and Eun Ae is flustered when she learns about the competition.

Yeon Ja gets into a nerve war with Su Jeong at Kangsu, and Eun Ae learns about Gyeol's career as an architect.

Eun Ae sneakily views photos on Gyeol's computer, and Eun Hyeong shocks Ji Seon by skipping his job interview.

Gyeol takes a drunk Eun Ae home, and Seung Ri feels jealous while Seung Wu gets a new collaboration offer.

Su Jeong gets caught searching Yeong Hwa's room, and Ji Seon asks Yeon Ja for money to help Eun Hyeong.

Eun Ae finds Gyeol playing cards at a senior center, and Min Ho takes a drunk Seung Ri home after dinner.

Eun Ae has a conflict with Yeon Ja over her money, and Gyeol makes a photo folder of Eun Ae on his computer.

Ji Seon sends the money to Eun Hyeong, and Gyeol holds his first meeting for the retirement community project.

Yeon Ja recalls the past after Eun Ae's outburst, and Kang Su takes a trip with Yeong Hwa to see flowers.

Gyeol rushes to the hospital upon hearing that Kang Su has collapsed, and Seung Ri grows wary of Eun Ae.

Seung Ri changes her attitude toward Gyeol, and Dae Chi overhears the password to Kang Su's safe.

Dae Chi attempts to open Kang Su's safe, and Eun Ae plans to meet Eun Nim at Kangsu Construction.

Yeon Ja and Yeong Hwa comfort each other at the hospital while Dae Chi and Su Jeong sneak into Kang Su's room.

Seung Ri is shocked to see Gyeol and Eun Ae together, and Min Ho encourages her to win the competition.

Seung Ri warns Eun Ae about rumors at work, and Yeon Ja tells her family she will focus on her own life now.

Eun Ae shares her sincere feelings with Seung Ri, and Seong Jun accepts Dae Chi's job offer.

Yeon Ja is devastated after seeing Seong Jun at Kangsu Construction, and Gyeol visits Eun Ae's neighborhood.

Yeon Ja buries herself in housework as Eun Nim watches with concern. A busy Eun Ae gets a call about Yeon Ja.

Kang Su receives an age-progressed image of Yeon Sun, and Yeon Ja meets Ji Seon to offer unexpected advice.

The competition begins with contrasting concepts, and Ji Seon talks to Seong Jun and the family about Yeon Ja.

Yeon Ja wails as Seong Jun remains unconscious, and Min Ho finds Gyeol's card at Seung Ri's house.

Gyeol goes to look for Eun Ae and finds her at the playground. He finds himself intrigued by her lucky charm.

Gyeol visits the columbarium on his father's memorial day, and Eun Ae hesitates to wish him a happy birthday.

Gyeol realizes his feelings for Eun Ae after his birthday, and Seung Ri and Min Ho find his cake the next day.

Gyeol decides to move out and looks for a new place. Meanwhile, Min Ho confesses his feelings to Seung Ri.

Eun Ae's family discovers that Gyeol is their new tenant, and Eun Ae urges him to find another room.

Gyeol and Eun Ae commute together. Min Ho focuses on work, and Seung Ri struggles with Gyeol's confession.

Yeon Ja reunites with Yeong Hwa at Dae Chi's gathering. Gyeol and Eun Ae spend time bickering at home.

Yeon Ja worries about Seong Jun after the gathering. Gyeol and Eun Ae enjoy a lovely date in the neighborhood.

Yeong Hwa goes to the police station to meet her long-lost daughter, and Su Jeong anxiously waits at home.

Seong Jun suspects that Gyeol and Eun Ae may be more than just colleagues. Yeong Hwa weeps for her lost child.

Eun Ae and Gyeol encounter Min Ho and Seung Ri while commuting. Ji Seon tells Eun Hyeong her decision.

Min Ho decides to propose to Seung Ri and meets Gwon Sik. Gyeol convinces Eun Ae to go home together.

Eun Ae gets startled after walking into Gyeol's room. Seung Ri asks Min Ho about Gyeol's housing arrangement.

Seung Ri asks Eun Ae to meet secretly. Eun Ae has no choice but to lie to Gyeol about having plans after work.

Eun Hyeong moves into Seong Jun's house. Seung Ri confirms that Gyeol and Eun Ae are living together.

Gyeol offers to help Eun Ae with her work. Su Jeong finds information on Yeong Hwa's lost daughter.

Su Jeong is shocked to find a necklace that matches Yeong Hwa's at Yeon Ja's house. Min Ho plans his proposal.

Eun Ae confesses her love to Gyeol, and Dae Chi and Su Jeong plot to open the safe using Yeon Ja's birthday.

Min Ho seeks Gwon Sik's help to stop Seung Ri. Gyeol and Eun Ae stumble across Yeon Ja's hidden past.

Min Ho's proposal to Seung Ri shocks Dae Chi and Su Jeong. Meanwhile, Eun Ae and Gyeol go on a business trip.

Su Jeong's hair-pulling brawl causes chaos, and Gyeol and Eun Ae's matching shirts stir up the office.

Eun Ae and Gyeol officially start dating. Meanwhile, Dae Chi and Su Jeong receive a shocking DNA test result.

Eun Ae installs a people-finder app for Yeong Hwa, and Seung Ri heads to Gyeol's room while he is with Eun Ae.

Su Jeong opposes Eun Ae's relationship with Gyeol, and Min Ho arrives late to apologize on her behalf.

Yeon Ja recalls a painful memory after seeing the rice cake, and Gyeol asks Eun Ae to meet in the yard.

Yeon Ja gets angry when Eun Ae asks to see her old necklace. Eun Ae also asks Seung Ri for an apology.

Eun Ae and Gyeol look all over for Yeong Hwa as her whereabouts become unknown, but she is nowhere to be seen.

Seung Ri is shocked to see Gwon Sik being blackmailed. Eun Ae is torn over her relationship with Gyeol.

Eun Ae and Gyeol build deeper trust by sharing secrets. Min Ho sees them together during a walk with Seung Ri.

Yeon Ja gets confused by Yeong Hwa's confession, and Gyeol learns about Seung Ri's plans to study abroad.

Seung Ri investigates Gwon Sik's past, and Gyeol plans to revisit a senior center with Eun Ae.

Eun Ae worries about Gyeol, who hyperventilated in the car, and Seong Jun learns about Gyeol's past.

A shocking video is played during the competition. Meanwhile, Yeon Ja feels resentment toward Yeong Hwa.

Kang Su advises Gyeol to stop hiding his pain. Seung Ri finds herself in danger while chasing Dong Pal.

Yeon Ja reconciles with Yeong Hwa to the family's delight but is saddened to learn that Gyeol was adopted.

Gyeol tells Eun Ae about the living funeral. Gwon Sik worries that Seung Ri may know about his dark past.

Gyeol realizes his nightmares are forgotten memories. Worried, Eun Ae checks his Mind Post Office log.

Kang Su plans to add Yeon Ja to his family registry. Eun Ae makes a dreamcatcher for Gyeol's nightmares.