Yu-Gi-Oh! is a series about a boy named yugi who solves an ancient artifact called the millennium puzzle,then he frees a 5000 year old sprit within the chambers of the millennium puzzle.The spirit was once a pharaoh 5000 years ago in Egypt.The pharaoh becomes yugis alter ego.
In Yu-Gi-Oh! people called duelists play a card game called duel monsters,the monsters they battle with were once monsters that roomed the world and spread destruction,until they were sealed away in stones,then in the modern time thousands of years later,maximillion traps the monsters into cards.Then it becomes a card game.Where duelists battle with monsters and magic released from cards.
However the pharaoh helps yogi win duels,they share their minds.They become great friends.
Yugi also has other friends that root him on in duels and help him through hard times:joey wheeler,tristan tylor,tea gardner,serenity wheeler,mia valentine,and ryou bakura.
Together they go through great adventures