ultraman_tiga_&_ultraman_dyna:_hikari_no_hoshi_no_senshi-tachi
Lit. "Ultraman Tiga & Ultraman Dyna: Warriors of the Star of Light"
The theatrical movie spin-off to Ultraman Dyna (series), released in 1998.
Takes place in between the Dyna series, before the finale.
Despite its title, Ultraman Tiga does not show up until the climax of the movie.