The Second Age is characterized by the establishment and flourishing of Nmenor, the rise of Sauron in Middle-earth, the creation of the Rings of Power and the Ringwraiths, and the early wars of the Rings between Sauron and the Elves. It ended with Sauron's defeat by the Last Alliance of Elves and Men.
Now what this means to you is that no, it will not follow the movies but you might recognize a few names.
Thank you. So it's a prequel about the flashback from the movies. I'm in!