Sulu and Chekov go on a shuttlecraft mission together

Lieutenant Hikaru Sulu and Ensign Pavel Chekov went on a shuttlecraft mission together. They took the shuttlecraft Galileo to an unfamiliar space station. The Galileo landed on the station and Sulu and Chekov got off. Sulu and Chekov explored the space station. Sulu found out that the space station was constructed by a powerful distant race. Sulu and Chekov got back on the Galileo and returned to the USS Enterprise NCC-1701.