Teenager Go Mifune aspires to be the world's best race-car champion with the help of his friends, family and his father's high-tech race-car, the Mach 5.
Go was saved by a masked racer who is revealed to be Go’s older brother, Rex Racer. When Speed was at Rex’s house, he was mistaken for Rex and kidnapped by intruder.
S1E4 25 min
