Kidnapped by Kagura upon Naraku's orders, Rin is tracked down by none other than Sesshomaru himself. At his castle, Naraku offers Sesshomaru a deal: Kill Inu-Yasha, and Rin will be returned! But Sesshomaru has no intention of carrying out Naraku's - or anyone's - command, and launches an attack. Meanwhile, Inu-Yasha finds his way to the castle and uses his newly learned barrier-breaking technique to gain entry, but is surprised to see his half-brother Sesshomaru inside. Can the two powerful brothers put aside their differences and work together long enough to defeat their common enemy?!