Leon Scott Kannedy is the main character in this game, we can play with third person shoter. If you ever play RE2, then there we will find Leon S. Kannedy for the first time. Leon S. Kannedy is the US Govermnet assigned by the American president to rescue the child of the kidnapped president in the Spanish area (I think of it because I am listening from his language) in the village of Puebos.
Well, in this game we will experience a great adventure, starting from the beginning meet with the parasite infected population, met with various kinds of monsters and strange creatures, met a Spanish scientist, met a mysterious red woman who is not is Ada Wong (we can also see in RE2), managed to save Asley Graham (son of the president), then Asley was kidnapped again, then successfully rescued by Leon, then kidnapped again, and then rescued again.
Please note that in Resident Evil 4, we will see the difference from the previous RE series. In RE 4 enemies we will encounter are not people infected with viruses like the previous RE series, but are caused by a parasite called Las Plagas, and people infected with parasites and parasitic eggs have ruptured called Las Ganados. The difference is that people who are exposed to parasites basically still have little consciousness. They do daily activities, talking, running, and others. In contrast to people infected with a virus that can only go to and fro and just menggiggit people.
Well in the ending game we can see the story how people - people can be infected by parasites. So here's the story, originally Puebos village is a quiet village where the inhabitants live harmoniously. Quiet and peaceful village. Then came a cult leader (Los Illumiados) called Saddler. He provoked the hugs to follow him and then he injected the parasites to the entire population. It was then that the village of Puebos began to change. Their consciousness begins to disappear and eventually they are dominated by parasites. Puebos village was so terrible.
In the chaos Leon will come later to find the daughter of the kidnapped US president. It turns out that Asley (daughter of the American president) was kidnapped by Jack Krauser who was ruled by Saddler in order to take over America, because after Saddler controlled America he would easily rule the world.