The world is beset by the appearance of monstrous creatures, but one of them may be the only one who can save humanity.
Continuing his "legendary adventures of awesomeness", Po must face two hugely epic, but different threats: one supernatural and the other a little closer to his home.
Thirty years after they served together in Vietnam, a former Navy Corpsman Larry "Doc" Shepherd re-unites with his old buddies, former Marines Sal Nealon and Reverend Richard Mueller, to bury his son, a young Marine killed in the Iraq War.