Focuses on the adventures of a bizarre superhero and his fights against various aliens and other enemies threatening the planet Earth.

Yoichi Tsuitenai was the unluckiest boy in his hometown. Until one day, his luck truly ran out when he was crushed by an alien spaceship, killing him. But, in this time of need, he was discovered by the great super hero of the cosmos, Lucky Man, who fused with him giving him the power to turn into the universe's luckiest superhero. But now Yoichi, as Luckyman, must defend the Earth from aliens invading to conquer it, with the help of his sidekick, Doryokuman, their friend Superstarman, and three others, Shoriman, Yujoman, and Tensaiman.—Wikipedia