Friendship

Annabeth is terrified. Just when she's about to be reunited with Percy - after six months of being apart, thanks to Hera - it looks like Camp Jupiter is preparing for war. As Annabeth and her friends Jason, Piper, and Leo fly in on the Argo II, she can't blame the Roman demigods for thinking the ship is a Greek weapon.

When Brian and Gregory receive an invitation to stay at a distant relative's strange mansion, well, they should know better than to go. Once there, they stumble upon The Game of Sunken Places, a board game that mirrors a greater game in which they have suddenly become players. Soon the boys are dealing with attitudinal trolls, warring kingdoms, and some very starchy britches.