One Last Adventure (Percabeth)

Finally a summer where they can all be together, for the first time in years. A summer without stress or worries. Just playing capture the flag and teaching demigods how to defend themselves. The Seven, plus Nico, Will, and Reyna decide to have the ultimate reunion, eight years after the Giant's war.
But an enemy just had to get in the way...

This is a Percabeth story, but will start with other ships for reasons.