A fourth trailer released for Kishiryu Sentai Ryusoulger:
65 million years ago, in the age when dinosaurs were prominent, saw a legendary battle between two tribes! One of a race fighting to dominate the Earth, and the knights who stood against them waged war for years!
When extinction came to the dinosaurs in the form of a meteorite, these creatures fled to space while the knights hid themselves within the Earth. Vowing to return should the tribe invade in the future, massive dinosaurs possessing great powers reside within a hidden sanctuary. The deadly tribe has returned to Earth once again, and after wreaking havoc across the universe have gained even greater power!
Knights and Dinosaurs! The time has come to keep the peace on Earth once again! Awaken your souls that transcend 65 million years! Awaken, the five chosen knights of the Kishiryu! You are the five swords that serve justice! Kishiryu Sentai Ryusoulger!