Why did the girl who turned into a Titan in Titans kill her own family and then run to the hero's house, and why did the hero help her kill people?

Female evolution is incomplete, prone to violence, and psychologically fearful. Men don't kill for women, but those people who kill women are obviously hostile to him. This is called the death of a rabbit and the sorrow of a fox.

"Powerful Titans" is a science fiction film directed by Lennart Raff and starring Sam Worthington, Taylor Schilling, and Tom Wilkinson. It was released on October 12, 2018 Released in mainland China.

The film tells the story of a future world in danger. In order to allow humans to adapt to the living environment of the Titan planet and continue the race to cope with the doomsday crisis, scientists specially formulated a human body modification experiment called the Titan Project.

Plot summary:

Los Angeles has become unfit for human habitation due to the impact of nuclear pollution. The earth will become a ruin, and mankind will face unprecedented challenges. In this universe, there is only one place suitable for human habitation, Titan, the largest planet in Saturn.

In order to immigrate to Titan, an experimental group dedicated to accelerating human evolution was established, and the soldier Rick became one of the experimental subjects. This experiment is also full of unknowns and dangers. Rick's body gradually changes, and unexpected changes put his wife Abby and son Lucas into panic.