Chapter 1:Not The Future But The Past

Tsuna,Dino,Enma,Yuni and Byakuran accidentally got hit by Lambo's malfunctioning 10 year bazooka.
Tsuna and co expecting to be in 10 years in the future but ended up in Primo's Time 400 years ago.
How will they get back and will the Primo and his guardian find out that they are from the future?
(Sucks At Summaries)