Han Dong-joo, Shin Ji-soo and Park Gi-tae were childhood friends who met in the church orphanage.

In one gathering in 1989, in front of the church altar at the orphanage, Dong-joo made his promise that he would protect Ji-soo forever.

Ji-soo was being sent to Japan by her company to secretly take pictures of the affair between Yuichi Yamamoto and Jang Soo-yeon.

In the meantime, Yuichi, who happened to be on a plane belonging to the Japan Airlines, played a prank by "accidentally" spilling coke on his neighbouring passenger.

Yuichi happened to be on a luxury cruise with his girlfriend Soo-yeon, and he took her onto the deck to take a look of the ship approaching Kobe before returning to their rooms.

Ji-soo was brought out on to the starboard, and her camera and handphone were being thrown overboard by Yuichi, following which he stuffed some money at her as compensation of her loss of her accessories.

A guilty Yuichi rushed to the edge of the deck to see Ji-soo leave the ship with the others, but was being hauled back to the galley by Soo-yeon for some wine.

He suggested to dine with her the following day before she leaves for South Korea, and handed her a box of lemonated chicken, saying that it would relieve her cold.

Back in Seoul, Yuichi worked as the director for KUBE, and was introduced to Jeong Song-jin, a manager and secretary.

As he obtained his water bottle from his sports car and undid the zip the jacket he was wearing, a dog approached him and barked, nearly bitting him in the process.

When Gi-tae offered to sleep with her by booking a room through a waiter, La-yeon picked up a glass of mineral water, splashed at his face, and left.

He then confided her that he suspected that his oldest son Tae-su did not die of natural causes, and has asked detectives to investigate on the matter.

Under persuasion, Dong-joo's father agreed to meet Ji-soo at lunch time on the day before he leaves for Japan.

As the duo had a cup of tea, Ji-soo criticised her father of abandoning them by migrating to Japan, leaving her mother to die waiting for him.

Jin-soo later went to look for Ji-soo after experiencing a bad dream that her act of killing Tae-su was exposed by her stepdaughter in-law.

Back in the hotel, Yukio made his announcement to return to Osaka and urged Yuichi to settle his business in Korea as soon as possible.

Tae-hee also informed Gi-tae that although Dong-joo and Ji-soo are not related by blood, by law they share a same father and are thus not supposed to marry, and have separated.

The next day, Dong-joo checked out from his hotel to prepare to leave for Japan, but looked back as he thought about the sweet memories he shared with Ji-soo: When he danced with her, and the birthday celebration.

He hung up the phone and wept for a while, before driving to the photo studio where Ji-soo worked, but to find that it was empty, and met Tae-hee.

Jin-soo called upon her son, and asked him to dine with her tomorrow, after her husband entered her room and expressed his will to find out the conspirator of Tae-su's death.

Under officer Hong's help, and Jeong and persuaded Ji-soo to work as she handed her a stack of files, and successfully at the moment the secretary called her out via handphone.

Ah-suh went to look for Gi-tae for removing a painting for the gallery, and then asked for his opinion as President Park's heir-apparent of his company.

Ji-soo told him that she had something to say, but hesitated as Dong-joo's phone rang, only to receive a call from Tae-hee that something bad happened to their family.

repeatedly, (Ah-suh smiling subtly at the side) and hearing his father "Wanting to be the heir by resorting to killing Tae-su?

Dong-joo went to Tae-hee's room, who expressed her past efforts to reconcile with Jin-soo and Gi-tae, and her doubts to trust who in the household after the ordeal.

Tae-hee then revealed the truth to Ji-soo, that Gi-tae left home after being accused of being the conspirator against Tae-su's death, in which case he was innocent.

Dong-joo then drove to the destination, through the narrow streets of the town and rushed up to the lodge where Gi-tae was alleged to be staying at.

At the chalet, Dong-joo spoke to secretaries Jeong and Hong via Internet relay to update with the company's status.

As they stood up and went to the altar and looked at Jesus Christ briefly, Dong-joo suddenly tugged Ji-soo's hands, fearing that something bad might have happened to him.

The next scene showed Gi-Tae's motionless body lying on a beach, occasionally touched by the sea waves.