S7·E14 Trinity Dragon's Fierce Battle

Team Trinity Dragon stumbles upon a secret facility run by Wakamizu, and they challenge him. If any members of Trinity Dragon beat Wakamizu, then he will tell them his scheme. However, if Wakamizu defeats all of Trinity Dragon, then they will become guinea pigs for his experiments. Both Karl and Tsuneto lose, but Kei gathers information from their fights to finally defeat Wakamizu. As promised, he tells them that he has been using this facility to gather Stride Force to summon the last Zodiac Time Beast and open the Stride Gate. Wakamizu escapes by activating the facility's self-destruct mechanism. Team Trinity Dragon also escapes before the facility is destroyed, and the group tells Kamui what they have learned. After praising them, Kamui informs them about everything that has happened.