Ke'er, a pure and lovely person as his name suggests, is simple and kind. She is a Vietnamese overseas Chinese, since the death of her parents at the age of five, she has followed her sister Jie'er to live together, and it is her sister who has worked hard to raise her to adulthood and provide her with education, until she finishes her studies and comes out to work, and Jie'er marries a woman. I thought that the two of them would be able to live a good life from now on, but unfortunately fate seemed to refuse to let go of these two people who were trying to live, and unfortunate things happened again and again.

Although Jie'er formed her own family after marrying, their sisters' feelings are still deep, especially after Jie'er is pregnant, but Ke'er is accompanied by her side, accompanying her to obstetric examination and busy going in and out. For Ke'er, her sister is her parents, her dearest and dearest. Unfortunately, due to her mistake, it hurt the person she loved the most.
Once Ke'er bought a sleeping pill called Adeline for her sister, who knew that this medicine had side effects, and eating it would cause fetal malformations, so Jie'er gave birth to a child with no hands and no feet. Her husband also divorced him over the incident. Ke'er has always been very guilty, and she has always felt that it was her own reasons that caused her sister to give birth to a deformed child, causing her to lose her originally happy family. She vowed not to let her sister suffer any harm from now on.
After the first marriage broke down, Jie Er met a good man again, married a wealthy businessman, and became pregnant again. Ke'er was very happy, and her sister finally got happiness.
Once, when she was accompanying her sister to a maternity check-up, Ke'er met the unscrupulous journalist Hu Sen, who specialized in digging up scandals and extorting others for a living. This time Hu Sen filmed Jie'er's entry and exit from the Angel Orphanage, he found that the wife of a rich Hong Kong businessman had a marriage before, and also gave birth to a deformed child, if this matter is exposed, with the social status of the rich businessman, it will be very sensational, which is absolutely detrimental to Jie'er's marriage.
Ke'er knew Hu Sen's ill intentions, so she did not tell her sister about the encounter with Hu Sen, and met hu sen privately alone, and Hu Sen also extorted 150,000 yuan from Ke'er on the grounds of photos. In Ke'er's eyes, her sister's happiness is the most important, money is just an external thing, so Ke'er gave him 150,000 yuan according to Hu Sen's request, originally thought that this would be fine, but did not expect that the vile and shameless Hu Sen had already left a back hand.
Not long after, Hussen asked Kerr to meet again and blackmailed Hussen again on the grounds of the negatives in his hand. 150,000 is all of Ke'er's hard-earned savings over the years, and now Ke'er is already penniless. Unexpectedly, the shameless Hu Sen actually had a non-divided thought about Ke'er, and suggested that since Ke'er had no money, he would talk about her heart, as long as Ke'er was willing to accompany her for a spring supper, he would take out the negatives in his hand.
Saying that Hu Sen directly pounced on it, the terrified Ke'er shouted for help while trying to escape Hu Sen's clutches, Hu Sen smiled obscenely and approached Ke'er, But Er directly picked up the vase next to him and smashed Hu Sen's head, which also made Hu Sen angry and ashamed, and there was no longer the previous carelessness, directly slapped up, poor Ke'er was directly slapped aside by Hu Sen.
Just when Hu Sen thought that Ke Er was bound and grabbed, the fierce Ke Er directly picked up the fruit knife on the table and tried to threaten Hu Sen with suicide. Hu Sen had to give up, and since Ke'er didn't want to talk about his heart, he would talk about money. Hussen continues to blackmail Ke'er for 150,000 yuan, and at this time Ke'er has understood that husson's kind of person is not credible, and only the dead can shut up forever.
Zhongyi is a new police officer in the police station, and Ke'er works in the police station's tea restaurant. Zhongyi gradually fell in love with this simple, kind and industrious little girl in getting along with Ke'er, and on this day, at the instigation of Zhang Dayong, he was ready to confess to Ke'er.
Zhongyi took two movie tickets to prepare for Ke'er to watch the movie, who knew that the young Zhongyi was nervous and unable to speak in the face of Ke'er, just as Zhongyi was walking down the street with his head down, he did not expect that Ke'er turned his head to ask Zhongyi to go to Lobster Bay to fly kites together on Saturday, at this time, Ke'er's eyes revealed an unusual light, as if he was planning something.
On Saturday, Zhongyi, who was full of joy, arrived at the agreed place on time, but she did not expect that Ke'er had arrived early and brought a large school bag, which she said put a lot of bottles of water in it.
When flying kites, Ke'er always let Zhongyi drink water and kept looking at her watch, in fact, her purpose was to let Zhongyi go to the toilet when she asked Hu Sen, and she also took the opportunity to go to the toilet to see Hu Sen.
Hu Sen appeared, and Ke'er took out the bow and arrow in her bag and carried Hu Sen through his heart, and she successfully used Zhongyi as a witness to her absence.
After killing Hu Sen, Ke'er was sleepy and worried about being afraid day and night, she always paid attention to the development of Hu Sen's case, and Dayong also looked at her strange appearance. Who knew that at this time, Ke'er learned from Zhongyi's mouth that Chen Bo, the administrator of Hu Sen's downstairs, had seen her go to find Hu Sen, and as long as Chen Bo spelled out Ke'er's appearance, then her murder would be discovered by the police.
The existence of Chen Bo is a fatal threat to Ke'er, at this time Ke'er has long since changed from an angel to a devil, she not only made Hu Sen shut up forever, but now she wants Chen Bo to disappear forever...
Ke'er knew that Chen Bo had the habit of drinking fresh milk every morning, so she waited for the milk delivery man to leave and took the opportunity to change a bottle of milk with Adrin sleeping pills under it, in order to eliminate the evidence, she wiped all the fingerprints on the bottle clean, and the result was that only Chen Bo's fingerprints were left on the bottle, but this just proved that Chen Bo was murdered, and asked how a bottle that everyone touched could have Chen Bo's fingerprints?
Killing two people in a row, under the investigation of the police, Ke'er's suspicions are getting bigger and bigger, and finally Zhongyi has to believe the fact that Ke'er killed people and can't bear to catch Ke'er.
The captured Ke'er still defends her sister and is reluctant to tell her about her, saying only that she had an emotional entanglement with Hu Sen before killing him.
Under the investigation of Da Yong Zhongyi, he finally found out the reason why Ke'er did so many things, and all the reasons were because of the deep sisterhood. Although Ke'er is pitiful, her sins are unforgivable, and she always has to bear the prison for her own actions.
Poor Zhongyi's first love ended so innocently, but She didn't want Zhongyi to wait for her, if she had the opportunity to get out of prison, she wouldn't marry, and she would serve disabled children for the rest of her life.