讲述远在辛巴诞生之前，他的父亲——年轻的木法沙与亲如兄弟的塔卡（刀疤），如何邂逅一群个性迥异的卓越伙伴，并共同踏上寻找荣耀王国的冒险征程。影片将逐一揭开两位狮兄弟与睿智的山魈巫师拉飞奇、自信勇敢的母狮莎拉碧、以及爱唠叨的红嘴犀鸟沙祖各自的起源故事，展现他们如何迎接来自敌人、同伴以及内心的重重考验。这场穿越广袤草原的命运抗争之旅，注定将成就一代伟大的狮王，亦将见证一对兄弟反目的悲剧宿命，最终谱写出荣耀大地生生不息的传奇，再次叩响生命循环的永恒主题。
The green Verdies are the tiny, but brave guardians of the lakeside. The young Verdies only become guardians when their hair turns brown. Until then, however, life is boring. The youngsters with green hair are not allowed to fly on warblers, not allowed to row alone, and they're not allowed to ride wild frogs at the rodeo. Willy Whistle's big dream is to become a guardian, but his curiosity always gets him into trouble. However, the whole lake becomes at risk when the enemies of the lakeside, the Grimps and the swans, enter into alliance. The guardians are helpless, but Willy comes up with a daring plan in order to save his home and his trapped friend, Jeremiah Jump. Luckily he is not alone, because Grandpa, the water snakes and the frogs also come to his aid.
