Growing tired from all the worrying, Ji-sun falls asleep only to be woken up the next morning by her mother-in-law banging on the door.

To top it off, her neighbour's nanny, who had introduced Han-Mae to her as her niece, calls her back after getting a frantic voice-message from her.

The man warns her not to calls the police and scares her even more when she hears Da-eun and Han-Mae's voices crying for help.

She runs around shouting Da-eun's name when she reaches the wharf, only to be greeted by a bag of her toys by the river, one of which she had bought for her very recently.

In the midst of this, her mother-in-law bursts into the police station and demands to know where Ji-sun is hiding her daughter.

Distressed by this new information, Ji-sun hurriedly drives out her building premises just as the detectives come in to see her.

At the police station, CCTV footage shows her entering the lift with Park Hyeon-ik, who seems to be well known amongst the detectives.

As she turns around, Ji-sun's face is seen covered in blood and she wakes up from her nightmare with a start, having fallen asleep in her car.

He finds the negatives of the photo she brought and Han-Mae was indeed the mother of the child, so protective that she didn't even let the owner hold her daughter.

She pays a visit to the now empty house but is soon interrupted by a neighbour who empathised with Han-Mae as his wife was a foreigner as well.

They remember coming to their house so that the 2 women could learn Korean together, but her mother-in-law and husband had strongly refused that.

She had then once contacted the wife to tell her that her daughter got better after treatment in Seoul and she shows her a picture of the healthy baby.

Han-Mae's mother-in-law is there to report her son missing since the last 2 days, but Ji-sun can't connect the names.

They connect the dots and figure out that that must be why she abducted Da-eun, the process being easier with Hyeon-ik being an infamous Organ Trafficker.

The detectives head to an accident site where a man fitting Han Suk-ho's description is burnt inside the car.

A flashback from a week ago shows us that Han-Mae had returned home late in the night and Ji-sun, worried for her, had walked in on her undressing - her face was a nervous sweaty mess and her back had scars from abuse.

He had convinced her to sell her organs in exchange for money, but help didn't come fast enough and her daughter was forcibly discharged.

She hit her surgery site and started bleeding and in an attempt to get up, she accidentally snatched Ji-sun's husband's ID card.

In a flashback, Da-eun was taken to the hospital for acute Pneumonia and her father was furious at her not being given a bed and for being kept in the ER for hours.

Being an employee, he had pulled some strings and forcibly discharged Han Jae-in and this realisation strikes Ji-sun as she feels that that is where it all began.

As she moves to the table, she sees a patchwork quilt that Han-Mae had made herself and embroidered the name 'Jae-in' at the back.

She remembers one day when she had come home to see Han-Mae sitting on the same swing with Da-Eun in her arms and how she had been so fond of her, even making plans to go to the beach in summer.

But he was still late as he reached the hospital to find Han-Mae sitting outside with Jae-in in her arms, anger burning in her eyes.

In the present, Hyeon-ik explains to Ji-sun that he didn't see her after that incident until a month ago when she asked him to kill her husband.

Seeing her grieved, Hyeon-ik says that she had asked him to make a passport for her baby long ago, having had plans to go back to her country after earning some money.

She runs to them but Han-Mae spots her before she can reach her and a chase ensues, resulting in the two women facing off on the hull.

She catches hold of her, but Han-Mae pulls her hand away from Ji-sun and she goes further and further down the deep sea, clutching Jae-in's quilt.

As she goes down, she thinks back to the time she was pregnant with Jae-in and was telling her that she was going to make her the happiest baby in the world.

She gets a bit depressed when Da-eun doesn't react to her at first, but then starts tearing up when she gets up and toddles towards Ji-sun, walking straight into her open arms and calling her "Mama".

[4] The film's rights were sold to numerous Asian countries including Japan, Singapore, Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Vietnam, Thailand and Sri Lanka.