Monster Hunter World: Iceborne Jump

From the introduction: The mystery of the Elder Crossing is all but over. Elder Dragons have always crossed the sea to the New World every one hundred years so they may lay themselves to rest within the Rotten Vale, their bioenergy fueling the cycle of life across the continent, carried through its veins - the Everstream. The recent phenomenon of increased migrations seems to have been the meddling of a powerful nascent being identified as Xeno’jiiva, luring large numbers of other Elder Dragons to perish, overcharging the Everstream (particularly the central Elder’s Recess) with bioenergy and feeding it with the strength of countless natural disasters. And the tale yet spins, as the energetic Research Commission persists in the New World to keep discovering and documenting, and another song will soon begin.