When Mikhail and Ismail try to escape, they fail. They were recaptured and put back in their cells. They accept their fate and start working in the plantation, making no further attempts to escape.
And every year, more slaves arrive at the plantation. The group expands and becomes a small slave colony that now communicates primarily using this pidgin language Mikhail and Ismail had created.
Mikhail finds a girl in the group and settles there, together raising a boy named Pasha. Ismail does the same and he raises a girl named Yara.
Twenty years later, Yara and Pasha kills Chuck and attempt a daring escape from the colonies along with the other kids, find a boat, and escape to an inhabited island.
Now the pidgin created by Mikhail and Ismail is the only language these children know. They settle in this new island and start a civilisation, a new culture, with a pidgin as their native language, which then gets passed on to the generations.
This is called a creole. And this cultural evolution and the process where a civilisation improves the pidgin into a mature language with structured grammar and a stable vocabulary (creole) is called creolization.
BBC offers its news service in the West African Pidgin English language. Check it out for a real-world example of pidgin.