史上最強のコンビ、ウルトラマンデッカーとテラフェイザー！連戦連勝の二体に世間の評判も上々でカナタも大喜び。
だがそんな中、宇宙港に再びスフィアザウルスが現れる！しかも前回より強化されているようだ。史上最強のコンビが立ち向かう中、不穏な影が動き出す…。
Ultraman Decker and the TerraPhaser prove to be the ultimate duo! Kanata is overjoyed when the pair's successive victories increase their popularity around the world. Suddenly, the Spheresaurus appears again at the spaceport! It seems to be even stronger than last time. As the ultimate duo faces against the monster, a disturbing shadow begins to move...
