The phrase "major happenings" refers to important or significant events or occurrences. It means that something of importance or prominence has taken place.
Sentences with «major happenings»
Whenever something major happens in the story, return to towns and who knows who could be available that you can recruit. (justpushstart.com)
Nothing major happening by me spending wise, but I know some expenses are coming down the pipe. (makingsenseofcents.com)
If anything major happens to the car you are driving you have the money to fix it or replace it. (mechanics.stackexchange.com)