After accidentally transmigrating into the tokusatsu world of [Kamen Rider Amazons], Lin Huai collapses by the roadside. Takayama Jin rescues him, and the two join forces to hunt down the fleeing Amazons.
One day, Lin Huai accidentally gets infected with Amazon cells. With help from Uncle Jin and Xiao You, he obtains the Sigma Belt, successfully suppresses the Amazon cells, and becomes Kamen Rider Sigma.
After Xiao You and Uncle Jin's battle of ideals comes to an end, Lin Huai is about to prepare for Uncle Jin's funeral when someone attacks him from behind, knocking him out instantly.
When he wakes up again, Lin Huai realizes he's transmigrated once more.
Staring at the desolate wasteland around him, Lin Huai freezes in place. Is this even Earth?!
Huh? Where did that blockhead and that tsundere come from?
