Overview
is a Japanese tokusatsu TV show which aired from 5 September 1997 until 28 August 1998. It is a direct sequel to the previous Ultraman series, Ultraman Tiga and the 13th entry to the Ultra Series.
Plot
In the year 2017 (seven years after the final episode of Ultraman Tiga), TPC has advanced beyond earth, and has created a new team, "Super GUTS". Humans have begun terraforming Mars and other planets in what is known as the "Age of the Neo Frontier". One day, the Neo Frontier is attacked by an alien race known as the Spheres. Shin Asuka has just joined Super GUTS and is in the middle of training maneuvers above Earth's atmosphere when he and his comrades are attacked. He proves himself in battle and can hold his own against ace pilot Ryo Yukimura. However, his ship is damaged and he ejects, after which he encounters a shining light. It is then that a new giant of light merges with the bewildered Shin, saving his life. When the Spheres enter Mars' atmosphere and merge with the Martian rocks to form monsters, Shin again participates in the battle, now equipped with a mysterious device known as the "Lieflasher". Upon the Sphere's new attack, Shin suddenly transforms into a colossal giant and manages to protect Mars from a group of monsters sent by the Spheres. The members of Super GUTS quickly catch on that this giant being is not Ultraman Tiga, but a new giant of light, "Ultraman Dyna".
The final story arc is rather somber, in contrast to the rest of the series. Dyna/Shin sacrifices themselves to save the Earth from Gransphia, the planet-sized mother form of the Spheres. He was last seen reuniting with his disappeared father and the two decided to continue traveling in-between dimensions. Eleven years after the end of the television series, the movie Mega Monster Battle: Ultra Galaxy establishes Shin's survival, and the Ultraman Saga had him briefly reunited with the rest of the Super GUTS before vanishing.
From Wikipedia (CC BY-SA 4.0).