Junior high student Tsuna is a failure at school, sports and socializing. But when toddler assassin Reborn arrives to groom Tsuna for his future as a Mafia boss, Tsuna may have found the „magic bullet” he needs to turn his life around!
Students at Tsuna's school are being attacked, and it's up to Tsuna and Reborn--on orders from the ninth generation boss of the Vongola Family – to figure out why and take the culprit down. Then it's time for a lunch break, featuring the ever-deadly cuisine of Bianchi, who has a lesson in love to teach. But the big surprise is Tsuna's discovery that a member of his „family” has become a turncoat!