Season 4
Seven years had passed since the battle with Mek in which the Z senshi lived in peace. On the donning of the seventh year a strange sandstorm came and with it the Lookout disappeared, only to be replaced by another Lookout that appeared the same in most regards. With this change in the Lookout came the spread of a violent disease that quickly became deadly to any that made contact with it. Several of the group became infected and were soon left sick and dying. Also, with the spread of the disease came two Saiyan-like people who closely resembled Goku and Vegita. Their names were Vale and Kata, and they had been sent by their leader, Tenik, in order to recover a ruby that held special powers. The disease that had been sent out into the population was from Tenik, who delighted in destroying entire worlds and wanted to use the power of the ruby in order to firmly conquer the entire universe. The ruby itself had the power to control wishes and gave the user whatever he or she desired. It turned out that one of the members of the group, who had in fact been from the other world in which Vale and Kata resided, had stolen the ruby from Tenik long ago. When Tenik found out that she was one that had stolen the ruby, he used his powers to transport all the Z senshi to the world in which he was currently ruling over. The entire place was destroyed and there was only one city that had life; the one in which Tenik lived. The Z senshi formed a shakey alliance with Vale and Kata, who hated Tenik, in order to get close enough to Tenik in order to destroy him. When they first went after Tenik, several of the group had been taken hostage by the madmen and had perform horrible acts in order to release themselves and their families from the crazy man that ruled the world. But when they had all finally been released, every member of the Z senshi suddenly awoke; everything had been a horrible dream that they had all shared. They all met together in order to discuss their joint dream, when suddenly Shenlong appeared and turned all the adults into children and all the children into adults. He did this because he had always hated Goku for calling him from his sleep so many times over the year and wanted to ruin his life. When all the adults were children they found out that the dream that they had all shared was actually part true when Vale and Kata appeared again. Trying to beat Tenik ahead of their dream, they were able to find the ruby and destroy it before Tenik could get to it. Without the ruby Tenik was quickly destroyed and the two Saiyan-like people, Vale and Kata, were able to rule and restore their world. Once the two worlds had been saved, Shenlong reversed his wish and restored all the adults and children back to their former states.