Andy becomes manager falls in and out of love with Erin and quits to become an actor/singer (terrible plot worst part of post-Michael)

Robert California sells the company to David Wallace (the government bought suck it for millions)

The senator comes out dumping both Angela and oscar

Erin's parents find her after the documentary airs

The big pool everyone has a problem with is Jim invests in a sports marketing company in Philadelphia and traveling between the two cities puts a strain on their marriage, The guy who's been holding the boom mic for nine years as part of the documentary crew has developed feelings for Pam nothing happens but the whole plot is just really difficult to get your head around

Dwight becomes manager permanently and Mary's Angela her kid really is his Michael shows up at the wedding to be Dwight's best man everyone lives happily ever after

Also Ryan had a baby and abandons it to run off with Kelly

Also Nelly, she's unimportant