Matthew Ko, Aircrewman Officer II of the Government Flying Service (GFS), and Benjamin Yip, Pilot I, frequently work together. While Benjamin flies an aircraft, Matthew rescues people. Matthew and Benjamin are appointed to train Aircrewman Officer III, Sandra Si, and Cadet Pilot, Kelvin Chiang. Both fresh graduates from training school. Meanwhile, when Matthew's girlfriend Carrie Hong suddenly loses her memory and seeks comfort from Benjamin, it causes a rift between the two colleagues. GFS staff are always ready to dive into the water and climb up mountains to save lives. How do they tackle their own challenges?
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