In the future, humanity wages war with giant humanoid weapons called Titanostrides. Isami Ao of the Japan Ground Self-Defense Force and Lewis Smith of the United States Marine Corps meet on the battlefield in Oahu, Hawaii. An enemy aircraft attacks, scattering their forces. To survive the battle and save their friends, unlikely comrades must find the courage to defeat this new threat.

A French-Chinese food critic returns to her family home and finds an old diary that chronicles a grand love story between a popular actress and the son of a triad leader in 1920s Shanghai.