The titular team is assembled by the Blackstaff to seek out the Sun Dragon, but in the process they find themselves dealing with the sudden scourge of giants rampaging through the Forgotten Realms, and delving into the lair of a mad wizard to recover a piece of the Rod of Seven Parts.
Force Grey are dispatched by the Blackstaff to the jungle continent of Chult to locate and destroy the "Soul Monger", which is trapping the souls of the recently-departed and causing those who've been resurrected by magic to slowly rot and wither away. Joined by a local guide, the team venture into the jungle to find the Soul Monger's resting place, the fabled Lost City of Omu, and confront whatever dark power is behind it all.
