Code Geass: Boukoku no Akito 3 - Kagayakumono Ten Yori Otsu

After the discovery of the face of their true enemy, Akito and rest of W-0 makes their return to their base, however it turns out to not be so easy afterall as the group ends up stranded in Warsaw where they must accept the help of a group of friendly gypsies. While W-0 struggles at making their return, the enemy begins the construction of giant weapon Ark Fleet.