Mugen's a buck-wild warrior — violent, thoughtless and womanising. Jin is a vagrant ronin — mysterious, traditional, well-mannered and very strong as well. These two fiercely independent warriors cannot be any more different from one another, yet their paths cross when Fuu, a ditzy waitress, saves them from being executed when they are arrested after a violent sword fight. Fuu convinces the two vagrant young men to help her find a mysterious samurai "who smells of sunflowers". And so their journey begins...