Bercerita tentang Kim Hae Kyung (Song Seung Hun) danWoo Do Hee ( Seo Ji Hye) yang sedang mengantri di sebuah restaurant untuk makan malam.
Mereka tertukar dengan pasangan mereka, dan akhirnya mereka makan bersama. Sejak kejadian itu, mekera selalu makan malam setiap minggu.
Dengan kejadian yang tak terduga di restaurant tersebut, mereka kemudian saling berbagi cerita dan juga canda tawa, hingga akhirnya hubungan mereka saling dekat dan akhirnya saling jatuh cinta.
# Main Cast
Song Seung Hun as Kim Hae Kyung (36) (Psychiatrist)
Kwak Hee Joo (곽희주) as young Hae Kyung
Seo Ji Hye as Woo Do Hee (33) (2NBOX Producer)
Lee Ji Hoon as Jung Jae Hyuk (35) (Freelance reporter, Do Hee's first love)
Son Na Eun as Jin No Eul (33) (Fitness trainer, Hae Kyung's first love)
# People around Hae Kyung
Lee Hyun Jin as Kang Gun Woo (Stylist, Hae Kyung's college friend)
Kim Seo Kyung as Lee Byung Jin (Hae Kyung's secretary)
Jun Kook Hyang (전국향) as Lee Moon Jung (Writer, Hae Kyung's mother)
# 2NBOX
Ye Ji Won as Nam Ah Young (CEO of 2NBOX)
Go Kyu Pil as Park Jin Kyu (Planning team leader)
Oh Hye Won (오혜원) as Im So Ra (ASMR Creator)
Ahn Tae Hwan as Kim Jung Hwan (Planning team member)
# Do Hee's family
Jung Eun Pyo as Woo In Ho (Do Hee's father)
Yoon Bok In as Jun Sung Ja (Do Hee's mother)
# Others
Park Ho San as Keanu / Kim Hyun Woo (Psychiatrist)
# Special guest appearances
Kim Jung Hyun as Lee Young Dong (Do Hee's ex-boyfriend) (ep. 1-2)
Kim Jae Won (김재원) as himself (ep. 1)
Kim Young Chul as Jjoda Man (ep. 1, 26)
Seo Eun Soo as flight attendant (ep. 1-2)
Jung Sang Hoon as ER doctor (ep. 2)
Kim Hyun Sook as Park Geun Hee (ep. 1-2, 8)
Lee Shi Un as food truck operator (ep. 3)
Tae Jin Ah as himself (ep. 4)
Kim Won Hae as man at steakhouse restaurant (ep. 7)
Sandara Park as Hae Kyung's patient (ep. 11)
Kim Hee Jung as eating show host (ep. 14)
Ryu Ji Kwang (류지광) as himself (ep. 14)
Kim Dae Geun (김대근) as Mr. Octopus (ep. 18)
Yannie Kim as Kim Jin Sub's fiancée (ep. 26)
