"Loyalty to the Country" is the highest value pursuit of every Chinese son and daughter. The animation begins with the well-known allusion "Yue Mu Ci Zi" (Yue's Mother Tattooing Characters), narrating the moving story of the protagonist who resolves to join the army and serve the motherland. Three youths, one dream; a heart full of passion, solely for the sake of the country; tempered by military life, their youth blossoms. Inspired by the traditional Chinese culture of "Loyalty to the Country," three youths serving in the navy, army, and air force fight together, grow together, striving for a strong nation and a powerful military, guarding peace and happiness!