it is the 5th game in the skylanders series.
there once was 8 special weapons of different elements. That were hidden when Kaos heard about it he decided he was going to find them. When he found a group of skylanders that already had the weapons.He then used special magic to send them to earth without a weapon. But he read the wrong one and it made there weapons into a special form called elementa.But they were still frozen. They were gone for 1,500 years. Until now. They have returned to stop kaos's plan to rule over skylands.