Six months after the battle between Chamber and Striker, the Cugel fleet has merged with Gargantia. Ledo is working as a member of Bellows' salvage team. On a salvage operation, Ledo discovers more records of the past civilization in a sunken ship with a salvageable hull. He reminisces about life on Gargantia with Chamber to Reema, whose ship had joined the Cugel fleet shortly before Cugel took it over. Later, he learns that the salvaged information includes specifications of a combat caliber similar to Chamber. Meanwhile the warring inhabitants of the continent have made a discovery of their own, one with which they want Ledo's assistance.
I suppose if I had been reading the manga and the like, I'd know more about 'The Land' that is often times referenced in these two OVA's as the source of the big bad. However that aside, it was nice to see more of Gargantia, as well as Ledo, Amy, and the rest of the gang. As usual the artwork, scenery and so forth were quite good, its just without the other context about what is going on, the story isnt as good as the main series.