Arslan Senki is about a prince fighting to reclaim his kingdom. On this episode, the prince wanders around the kingdom.
It seems to be quite similar to another anime I'm a fan of called Madan no Ou to Vanadis which is not bad. Also they explained the war in a similar way. Although the only downside I didn't like is the CG (or computer graphics) that they did for the armies during a battle. Now what's going to happen to the prince on the next episode? Overall, decent introduction about the kingdom and characters.
Conclusion: Decent introduction about the kingdom and characters.