When a forerunner signal from a moon on the frontier is detected, the UNSC and the USC send a joint strikeforce to investegate before covenant remnant forces show up. Follow the story of the UNSC William of Orange and the USC Unbending Justice when they are thrown into a galaxy far far away. Disclaimer: I do not own Halo or Star Wars.

In an alternate universe where after Return of the Jedi (about the time the Resistence was formed) after a kyber crystal inside the death star 2 exploded it created a huge rip in life and death and the timeline was altered to let heroes and villains from the Clone Wars and the Old Republic survive. Rest of it in Chapter 1