As time went on though the constant inbreeding began to make many of the Unas untrainable. Burrock attempted to use the Stargate by inputting an endless amount of combinations but none of them worked until he tried an address handed down through generations of various families. This address worked and led to the Unas homeworld of P3X-888. On his journey their, Burrock captured Chaka in an attempt to bring back and introduce new blood into their Unas slave population. When SG-1 came to the gate on a mission to save Chaka, SG-1, Daniel Jackson and Jack O'Neill attempted to rescue Chaka but were caught. With the help of some of the enslaved Unas they eventually escaped and made it back to Earth. On their way to the gate they encountered Burrock, weaponless they could do nothing, but Chaka was