When Tim was 7 his dad (who is a Pokémon master) left him and never returned, Tim assumed the worst that his father had died which left him heartbroken and sad. Years later Tim was trying to catch his first ever Pokémon, but failed every time he tried

Tim raged quite and went back home, where he found a letter on his bed saying he got invited to Rythem City, the city of the best Pokémon trainers ever! Tim packed his bag a ran out to the train station

Meanwhile at Rythem City, a lab experiment went horribly wrong and may have caused a dead body to be reincarnated into a Pokemon (Pikachu) and that body was no other than Tim’s father’s body. He was now Pikachu

Tim arrived at Rythem City and was loving it, he was thinking this could be he chance to becoming a mater Pokemon trainer

Tim was looking for a place to rest, so he went to a near by bench and sat down, that’s when a Pikachu (aka Tim’s dad. But he doesn’t know that) sat beside him