After the explosion went off Dak, Sera, and Riq use the Infinity ring to travel to the Egyptian pyramid. When they got there they were stuck there. until they figured out a password with the ring. When they figured the password of the ring they saw they had to go to Spain in 1492. I wouldn’t have guessed a password in a couple minutes if I wasn’t sure I was right about the password. If I guessed I wouldn’t know if it would explode.