We flashback to the year 2011. Nae Sang trusted in the wrong guy and now he's bankrupt. Creditors are chasing after him and his family. Where will they run to? This all happens on his wife's birthday.

The family heads to Dang Sook's house just to find out she passed away a year ago. Nae Sang tries to commit suicide but his family stops him. Ha sun goes to a reunion and Jin Hee gets drunk and expresses all her troubles.

When their car is devoid of gas, the Ahn family is left in the middle of Kyung-ju with nowhere to go. They meet a quirky local boy named Seung Yoon who feeds them. Jin Hee gets a call for an internship at a big company.

Nye Sang and and Kye Sang become closer when the Ahn family goes to the Yoons' house. Jin Hee runs into trouble on the way to her first day of work when she spots a familiar gangster. Ha Sun attempts to get the money back from the con artist who cheated her.

While at school, Ji Won finds a lost boy and Kye Sang comes over to assist. The Ahn family is forced to deal with the thugs coming to collect their debt. They hide in Nae Sung's secret space under his house. Ji Won allows Julien to stay with her.

Nae Sung and the family construct a plan to repair the damage caused in their attempt to hide from the debt collectors. Part of the plan involves them keeping the tunnel below the house open. Neighbor Ji Won is not interested in doing so until she hears Kye Sang lives next door.

The family's attempts to repair the bathroom go horribly wrong. They concoct a plan to know when the gangsters arrive using a signal from a gong. Things don't go so smoothly when the debt collectors actually appear. Jin Hee's job prospects are looking up when she gets a call about another internship.

When Yoo Sun advises that the kids start attending school locally tensions arise. Jong Seok wants to continue his hockey playing so his mother asks Ji Seok to deal with it. Nae Sang begins to worry about his health. As a safety net he befriends Julien, who shares his blood type.

Yoo Sun discovers that she is going into menopause. Nae Sung treats her insensitively, but tries to make up for it with thinly veiled kindness. While Soo Jung has an easy transition to her new school, Jong Seok is having trouble. Seeing him slacking off, Ji Seok takes action.

The quirky boy Seung Yoon takes up the Ahn family's offer to drop by. While at first reluctant, Nae Sung then sees a business opportunity. Ha Sun is having trouble at her job, but Ji Seok pushes her to join him at a baseball game. His attempt to help her unwind is more successful then he planned.

Ha Sun feels strange about her living arrangements with Julien. Things become more uncomfortable when Julien finds a bra lying around and embarrasses her. Nae Sang finds himself to be terribly bored sitting around the house all day. Kye Sang attempts to coach him in keeping himself entertained.

Tensions erupt between the family members when Soo Jung's new attic room is complete. Jong Seok attempts to use seniority to get the room, sparking a family wide dilemma. Kye Sang runs into Ji Won at a protest and the two share in an intimate conversation.

When the school is required to put on a play, Ha Sun and Ji Seok's contrasting personalities clash. Yoo Sun goes next door to borrow something and accidentally finds herself staring at Julien in the shower. When Nae Sung finds her, he is furious. Their tensions are taken to the family for discussion.

When they are forced to deal with a number of bills an argument erupts between Nae Sung and Kye Sang. Nae Sang sets out to get the 900,000 Won the family needs. Young Wook lies to Ha Sun about a black eye in order to impress her.

Jong Seok attempts to play hooky but gets caught by his uncle Ji Seok. When Ha Sun comes over to watch baseball with Ji Seok, she becomes closer with Yoo Sun. Jin Hee and Kye Sang are forced to make amends when a picture of the two comes out with a big headed Jin Hee.

As the family's dire financial situation becomes even more clear, Nae Sung decides to take major action. Fierce competition for their uncle's laptop is started between Soo Jung and Jong Seok. Jong Seok is angry at the methods Soo Jung employs, so he tries some alternative strategies in an attempt to come out on top.

Ha Sun and Ji Seok pay a visit to Kye Sang after Ha Sun is bit by a stray dog. Kye Sang's cheery disposition is not enough to dissolve Ha Sun's worries. While wallowing in the frustrations of her job, Nae Sung stops by and comforts Jin Hee.

Baek Jin Hee thinks that Yoon Kye Sang likes her after misinterpreting events. Yoon Yoo Sun urges a special test for someone close to Ahn Jong Suk and Baek Jin Hee has an odd dream.

Seung Yoon comes by to visit Jong Seok, but Yoo Sun discourages him from visiting. Conflict ensues. Jin Hee considers the possibility that Kye Sang has a crush on her and tests him to find out. Her intense feelings trigger strange dreams and sleepwalking.

Yoo Sun attempts to get a date for her brother, but it fails as he would rather go to Rwanda. Jin Hee is forced to deal with the repercussions when her internship opportunity falls out from under her feet. Meanwhile, Nae Sang attempts to hunt down a former business partner.

Jong Seok is getting failing grades in school and the family is forced to figure out a solution. Meanwhile, a video of an intoxicated Ha Sun at a baseball game is going viral. An accidentally sent text message causes Ha Sun to become furious at Ji Seok.

After tasting a special pie made by Julien's grandfather, Nae Sung is filled with inspiration for a business venture. Jin Hee gets Kye Sang a spot in a smiley photo exhibition. Kye Sang later causes trouble for her when is the proctor of a test she is taking.

Jong Seok becomes frustrated with his poor school performance and the harassment he gets from his peers because of it. When Kye Sang invites Lee Juck over he meets the entirety of the Ahn family. He finds it difficult to withstand the family's constant antics.

When Julien offers Ha Sun a sort of rent payment, it inspires the other roommates to consider their own contributions. Ji Won and Kye Sang take care of an elderly woman together. Things become stressful when the old woman has to go the emergency room for surgery.

When Ji Won and Kye Sang discover text scrawled on the wall of the underground passage, they wonder aboutits potential origins. After a particularly good day, Ji Seok gets a date with Ha Sun to top it all off. On the other hand, things are not going so well for Young Wook.