Unlocked

Sam and Charlie are immortals that have been hunted by Hamel, Charlie's brother, for almost three centuries.
Hamel has had enough waiting around. He was going to put his plan into action that night and it was going to work, he was sure of it.
Both Sam and Charlie go on an adventure to stop Hamel once and for all.
Will they succeed?
------------------
I really don't like writing summaries, but there you go, my awful rendition of what is supposed to be a summary.