I Origins movie plot

Ian Grayis a PhD student in molecular biology specializing in eye evolution. When he went to a party one day, he met a mysterious model girl wearing a mask. Although she disappeared into the night after only a fleeting moment, he found her with the beautiful eyes of the girl in his memory, and the two fell in love immediately. Even if the basic beliefs in life are completely different, this will only deepen the connection between the two, and they vowed to accompany each other forever. However, an unexpected elevator accident killed the girl, and Ian wandered in depression afterwards. Thanks to his experimental partner Karenhe regained his strength. Many years later, he formed a family with Karen and had children with Karen, and when the children entered their identity through iris verification, they made a profound new discovery. Ian entered the iris of his deceased girlfriend into the system, and unexpectedly discovered that someone else had the same eyes, so he decided to leave his family and travel around the world to find the true meaning of this new discovery.