Ep 31. History

Broodwing works with Professor Cerebros to use the Dino Gems to bring Kira, Conner and Ethan from the past. At the Base, Kat sees a strong surge in Ranger energy on the map and Cruger sends his cadets to investigate. They arrive just in time to save the Dino Thunder teens from Broodwing and his goons. Back at SPD, the teens explain how they were on the way to their class reunion when Broodwing brought them to the future. He tried to brainwash them into working for him, but they escaped. Broodwing attacks with the Dragoul monster and SPD must respond. The Dino Thunder teens want to help, but Cruger tells them it's too dangerous and orders them to stay at the Base. Gruumm is furious that Broodwing has initiated another attack, and he and Morgana bring down their own army to join in the battle. The SPD Rangers are soon overwhelmed. The Dino Thunder teens can't stand by and watch. They rush to help. Kat activates the Dino Thunder gems and the Dino Rangers are back in action! With the Ranger teams combined, Gruumm and Broodwing are both beaten back for now. After the battle, the Dino Thunder teens are reluctant to go back, but find out that their lives are happy and successful after their superhero days.