After Ultraman Trigger, a new hero arrives to help GUTS-Select with fighting giant monsters! His name is Ultraman Decker. Never giving up, Ultraman will always protect our universe.
When GUTS-Select investigate mysterious disappearances, they learn it is work of an evil alien who intends to invade the Earth, called Professor Gibellus. However, just in time, a mysterious woman appears to help GUTS-Select.
Ultraman Connection Presents: Tamashii Nations Special Streaming featuring Ultraman Trigger is a special filmed stage show based on various Ultraman characters and released on YouTube as a part of the eponymous stream.
In the spring of a new semester, a "ranking" is sent to Class 2-D. It clearly shows the rankings of all the students and the homeroom teacher. The one who ranks 1st is Himeyama Tsubaki, a kind and popular honor student recognized by everyone. But one day, without any warning, she commits suicide. A few days later, everyone in the class receives a suicide note from Himeyama, and from that day on, the class begins to fall apart.