your uncle is related to leon so he gives you dynamax ring and he gives hop 2 starters
you go on a train to a little town near the open world after the open world
you can go to a water, grass or fire gym after 3 gyms
you go back to the open world and you can raid and make curry
after this you go in sword to fighting gym and then poison gym and in shield you go to ice gym and then steel gym in the other side of galar you go to the fighting gym that is ghost in shield and everything switches
the last gym is by what starter you chose and his second type
then you go for the last time to the open world and fight vs marnie\bede marine if you go to the open world from one side and bede from the other after that
you are raiding zacian or zamazenta with hop sonia and the rival you havent battled aginst
then you go back to your town to meet your dad and he will order you a taxi for the last city
leon is really easy but then you battle the 3rd legendary pokemon wich you cant catch until the post game