Outlines can be made at any point in the process, it sounds like now is a good time for you.
If you don't know what happens next, you should never have started writing it.
Did Gorfus appear yet
The universe should be threatened by a previously unmentioned threat and the main character will use the power of humanity and friendship to beat the villain, also causing a bunch of collateral damage. The next novel in the series will be called "[Name of first novel]: After the Battle of All Time" and would be basically a Harvest Moon book.
Go make your million.
Separate names with a comma.