When they meet with a traffic accident, Gintoki and Hijikata miraculously escape without a scratch, but their souls end up switching bodies. With no means to return to normal, Gintoki has to live as a freedom-loving Hijikata, and Hijikata as a Gintoki who stresses strict discipline. The change in these two leaders transforms the Shinsengumi and Odd Jobs into completely different organizations.
Until we find a surefire method to go 
back to normal, don't do anything stupid!
لا تتصرّف بغباء حتّى نعثر على طريقة حتمية نعود فيها إلى طبيعتنا
Enquanto não encontrarmos um 
jeito garantido, não faça nada idiota!