Houston where they meet Jason, one of the astronauts who designed the shuttle. They help to quell a riot that breaks out when demonstrators break down the gates at NASA, and Cosmic Boy becomes convinced that some unseen enemy is deliberately trying to prevent the mission. As they depart, the couple notes that both of their families are from worlds settled during the Great Emigration from Earth. They are unaware that the last name of Jason — the astronaut they just met — is Krinnski, which implies that he may be a distant ancestor of Cosmic Boy, whose real name is Rokk Krinn. Cosmic Boy and Night Girl decide to return to the 30th century, where time travel experts Brainiac 5 and Circadia Senius might be able to determine the problem. Upon entering the timestream, their Time Bubble encounters a storm and starts to shake violently. They are forced to return to the 20th century. They turn to Jason Krinnski for assistance, who does his best to help them repair the Time Bubble. However, their second attempt to leave fails, as if there was a barrier blocking them. Realizing that they need a massive power source to propel the Bubble all the way to the 30th century, Cosmic Boy harnesses the electromagnetic energy from Earth's magnetic field. They breach the barrier, but are propelled past their own century, all the way to the End of Time, where they are confronted by one of the Legion’s deadliest enemies: the Time Trapper. The Trapper toys with the couple, giving them an hour to find their way back to the 30th century. They eventually make their way through the Trapper's Citadel to their Time Bubble, just as the last grains in the hourglass are about to fall. Cosmic Boy uses his power to warp the hourglass, closing it so that the last grain will never fall. Amused, the Trapper allows them to leave. He directs the Time Bubble to the 30th century, placing it right in front of Legion Headquarters. He warns the couple that this will be their final journey through time, and that "the next occasion when a Legionnaire dares break the time barrier will be the last". As the two of them race to warn the Legion about what has occurred, the Trapper realizes that the Legionnaires will be returning for him. He finds this quite satisfying, as he looks