Set Off! It's Time Bokan! is the first episode of Time Bokan which aired on October 4th, 1975.
After Dr. Kieta goes on the first test voyage of his new invention, Time Bokan, the time machine returns with a talking parrot named Parrosuke and a highly valuable Dynamond — but no professor! Worse yet, Parrosuke doesn't want to return to his own time and place. Tanpei and Junko want the professor back, and Marjo's trio of villains want more dynamonds, so they'll take any hint they can wheedle from the stubborn bird!