Ultraman R/B The Movie- Select! The Crystal of Bonds opens at a time when kaiju have stopped appearing in Ayaka City where the Minato family lives the year has gone by peacefully.
The Minato family is living in peace, but Katsumi is undecided with what he wants to do in the future now that Isami and Asahi are off following their own dreams. So Katsumi decides to meet up with an old high schoolfriend named Toi who is aspiring to be a game creator. However Katsumi discovers that Toi had in fact quit his job, and has spent some time living away from home, much to Katsumi’s own shock!
Another mystery emerges with the strange appearance of Ultraman Tregia, who targets the closed off heart of Minato Katsumi. He suddenly captures Katsumi and flies him off across space t a distant planet where several kaiju live! Meanwhile on Earth, Minato Isami, Ultraman Blu and Asakura Riku, Ultraman Geed who was sent here from another world, encounter the vicious kaiju Snake Darkness!
Can Katsumi return home to his family? And who is Ultraman Tregia, and what is his goal? Now, the power of our bond invokes a miracle!