Thirty million years ago when the universe was threatened by two horrifying monsters, the mysterious Ancient Ultra Warriors appeared and defeated the beasts. The Ultra Warriors then created the Pyramid of Light in the Land of Tiga and remained there waiting to be called upon again. At the beginning of the 21st century, two huge monsters reappear, demolishing everything in their path. Even the super weaponery of the Global Unlimited Task Squad (code name: G.U.T.S.) can't stop them. During a battle near an ancient golden pyramid, something goes wrong. Daigo, the GUTS Team's most daring young fighter, becomes joined with the last remaining statue of one of the Ancient Ultra Warriors. The mighty Ultraman Tiga is born! Now when danger strikes, Daigo holds aloft the Spark Lance and transforms into Ultraman Tiga!