Naruto Episode 104: Run Idate Run! Nagi Island Awaits!
Episode 104 of 220 of Naruto, aired October 13, 2004, 25 minutes. Available with English subtitles and dub where released.
Episode summary
While the Shinobi that is working for Wasarabi begins to beat up Idate, Naruto, Sasuke and Sakura finally reach the same island. However, some old enemies appear to get in their way once again! Will they manage to find Idate and rescue him before its too late?