YOU SAID:

so why did ness and his friends paula, jeff and poo go on a quest to save the world from evil influences?

INTO JAPANESE

だからネスとポーラ、ジェフ、プーは、邪悪な影響から世界を救うためにクエストに行く彼の友人はなぜか。

BACK INTO ENGLISH

So why go on quests to save the world from evil influences ness and Paula, Jeff, and POO are his friends?