Marvel Cinematic Universe timeline begins when young Steve Rogers is recruited into the SSR as part of a "super-soldier" experiment. This experiment gives rogers superhuman strength and makes him an even better soldier. Rogers and his allies fight against HYDRA and defeat their leader Johann Schmidt. Rogers crashes a plane into the the ice and goes to coma. When he wakes up, Nick Fury comes to meet him asking for help. This is Fury's first appearance in the mcu.