Sent traveling through time and space by Primus, Hot Rod finds himself in various settings all across time as Transformers: Regeneration One uses this zero issue to tie the existing comic continuity and the 80′s Transformers movie together in a single issue. Although occasionally confusing, the comic mostly succeeds.
On his trip through time Hot Rod watches Optimus Prime sacrifice the Matrix to stop the Deathbringer, watch as the Earth is consumed by zombie Decepticons, see hidden origins of the early Transformers long purged from their memories, and on a planet of junk watch Galvatron fight to the death with a robot who looks very familiar.
Despite not quite following all the various plotlines (zombie Decepticons? and what exactly did Jhiaxus steal from the rest of the Transformers millennia ago?), the issue does well to deliver plenty of action and provide an opportunity to bring both the Matrix of leadership back into the original Marvel Comics continuity but introduce Rodimus Prime as well. Worth a look.