Clank wants to stop Drek , and wants Ratchet to help him find a superhero called Captain Qwark , who he thinks will stop Drek . Clank fixes Ratchet 's ship , so that Ratchet will help him .
Clank urges Ratchet to continue their quest to confront Drek , but Ratchet is obsessed with getting revenge on Qwark .