Not by far, but the 4 Inuyasha movie is the best out of the four. With both a good plot lines and characters, it makes it a wonderful movie for all Inuyasha lovers.
Summery: Inuyasha and the gang end up in an area off the cost of a mysterous island that seems to apear every fity years. This is a island that was home to human and demons alike, making it a half breed island. But the only people left are six young half-demon children. All but one of the kids bare the mark of the four demon gods, meaning they can not leave the island. They send the littlest that does not bare the mark away to be safe. She runs in to Inuyasha seeing as she already knows him from fifty years ago when Kykio and he visited the island. She begs him to save the others. With Kagome's heart (threat) Inuyasha and the rest fallow the small girl back to the island where they find the young half-demons and help them defet the four demon gods seeing as Inuyasha bares the mark of the gods and can not leave the island as well. And there's Kagome's kind heart and wicked furry toward Inuyasha if he refuses.
This movie as I see is the best out of the four, although it's hard to say considering I like them all.