When Imperial forces attack the small border town of Bruhl, Welkin Gunther, son of late General Belgen Gunther, is forced to fight for his life alongside Town Watch captain Alicia Melchiott. Along with Welkin's adopted sister Isara, the three escape to Gallia's capitol and subsequently join the country's militia forces. As members of the newly-formed Squad 7, they must work to repel the invading Imperial forces and discover the true purpose of the invasion itself.
I notice that many people who rated this anime poorly tend to do so because they compared it to the game version and felt that the anime version could not live up to their expectations. However, when evaluated on its own without comparing it to the game version, I think it is a pretty good anime, with good storyline and likable characters. In fact, I like it so much that I actually bought the DVD version later on.