Yu-gi-oh Motou also known as just yug or Yu-gi is a 14 year old freshman at Domino High school. He has a few many good friends like Joey Wheeler, Tristan Taylor and Tea Gardener who all attend Yu-gi's school.
One day his Grandfather Solomon Motou gives Yu-gi an ancient puzzle from Egypt back over 5 millenia ago when the people played powerful games with cards and monster came alive and the losers would pay the ultimate price there lives. The losers of these shadow games were sent to the shadow realm where there souls would stay for all eternity.
So Yu-gi solves the puzzle giving Yu-gi more power than he realizes, it fills him with ancient powers. With in the puzzle is an ancient pharos's spirit that help Yu-gi when he duels and when in need. While he duels the ancient puzzle powers fill Yu-gi and guide him. Who ever owns all 7 items will rule the world.
Now Yu-gi is a master duelist he has defeated some of the best duelist in the world like Seto Kaiba and also the creator of the modern day game Pegasus. Him and Joey competed in the Battle city Tournament run by Kaiba himself. Yu-gi owns one of the three god cards he owns Osiris.
Yu-gi is a very kind and a giving person when there is wrong he writes and stands up for his friends and family. When Pegasus traps Yu-gi's grandfather in the shadow realm after Yu-gi looses to him and Pegasus claims his grandpa's soul as a prize, Yu-gi and his friends go to Duelist Kingdom to compete Yu-gi wins and gets his grandpa back. Whether an enemy or a friend Yu-gi helps he is a very helpful person.