Gaim Gaiden: Kamen Rider Baron is a Japanese superhero film that serves as the the second installment of the Kamen Rider Gaim Gaiden series of V-cinema films set within the continuity of Kamen Rider Gaim. In the film, Kaito encounters his high-spirited doppelgänger and works to save him from his family conspiracy.
Gaim Gaiden: Kamen Rider Baron
Kaito Kumon continues his search for the Over Lords after being egged on by Ryoma Sengoku. The objective: become stronger. Meanwhile, the heir of a foreign country, Shapool, visits Zawame as part of an inspection, and Kaito discovers this Shapool person is identical to him. Eager for some freedom, Shapool finds Kaito, sedates him and steals his clothes which then he appears before the Beat Riders posing as Kaito.
Gaim Gaiden: Kamen Rider Baron
Kouta and the others cannot believe their eyes when they see who they believe to be Kaito dancing with a smile on his face. Shapool then takes Mai to Charmant, where they eat one of the cakes Shapool has baked. Meanwhile, Kaito comes round to find out that a group led by Shapool’s butler Alfred had been looking for Shapool. Being identical, Kaito is mistaken for Shapool and taken by the group. Alfred then deduces Kaito’s identity and has found out of Shapool’s location, where he contacts Oren to take care of him. Kaito and Shapool encounter each other again, where then Alfred has found them and threatens to kill Shapool, which cause Kaito reminded his darkest past.
Gaim Gaiden: Kamen Rider Baron
Kaito protects him and learns of Shapool’s story, as well as sharing his own story with Shapool. After finding out that Alfred has taken Zack, Kaito goes after Alfred. As both were transformed and battled each other as Baron and Tyrant respectively, Tyrant unexpectedly corrupted by the Energy Lockseed possessing Helheim’s manipulation and became an Over Lord Inves. Yoko later came in and gave the Ringo Lockseed, whom then took it from Ryoma, to Kaito and transformed as Baron Ringo Arms despite the latter would rather turn himself into an Inves. He defeated Tyrant with the Cavaliend Rider Kick before he later destroyed the Ringo Lockseed.
Gaim Gaiden: Kamen Rider Baron
In the end, Shapool writes a letter to thank Kaito for saving him from Alfred’s threats and taking what Kaito has taught him, to believe in friends and to fight for what is right, before he leaves Zawame City for reuniting with his father. Kaito went to his parents’ tomb at a cemetery, and later walks out as the flowers were left onto his parents’ tomb. The film ends with an appearance of Lord Baron as a foreshadow to Kaito’s dark future.
Gaim Gaiden: Kamen Rider Baron