Following the plot

Able died and transmigrated into another world in the cliché way, read a cliché book, died from illness and woke up in the world of the book. Except he was a few tens of thousands of years early, after plenty of trails and plot he eventually ascended to godhood. Fast forward a few tens of thousands of years and Able has become one of the major gods just in time for the actual plot of the book he read to begin. A plot he had no intention of changing due to the Mc of the book being born with some universe saving MacGuffin a universe Able lived in, so he planned to sit back a enjoy the story of the hero. Except for 3 tiny problems in the form of 3 new transmigrators who each have their own cheat, and immediately trying to screw up the plot. So Able has no choice but to act as plot armor to ensure the plot of the universe follows the one in the book to ensure that he (and the universe survive).