Wtih the Mare Set mysteriously gone and the Arcobaleno missing, grave changes occurs in the past that causes dire consequences to the present. To save their time and the whole world yet again, Tsuna and his Guardians are sent back to the past to put things right... only to be mistaken as runaways and get adopted by the First Generation Guardians.

[CRACK] Test how dirty your mind is! About a terrible horrible misunderstanding which happens when Vancha and Evra talk about snakes. Evra is of course talking about the reptile, snake, where as Vancha is talking about...you'll see.