英雄們正努力擺脫白骨精的糾纏，他們需要找到一種強大的武器才能打敗她，不過，六耳彌猴卻另有計畫。

英雄們被東海龍王抓走了，而東海龍王竟是龍小驕的遠房親戚！看看她能否在六耳彌猴追上來前，救出她的朋友們。

他們的貨車在沙漠中拋錨了，英雄們陷入了困境。他們唯一的希望就是跟狡猾的金魚精玩遊戲。

在中途休息訓練之後，英雄們重新上路，奇怪的是齊小天注意到他們是往東走，而不是往西走，情況變得不太對勁！

孫悟空在神祕的冥想中被驚醒，他自認是年輕時的自己。當唐師父被綁架時，年輕版的孫悟空和朱大廚去救他。

齊小天、龍小驕和沙大力發現自己被困在沙漠裡。此時，一個熟悉的身影前來拯救了他們。

看著朱大廚最愛的烹飪節目「跟著嫦娥一起烹飪」，齊小天發現第二個環就在她的廚房裡，也就是在月球上！

為了取得最後一個環，英雄們需要……贏得一場才藝比賽？不過，唐師父可不會甘心只能當個樂團經理！

孫悟空拖延住哪吒，讓齊小天和其他人把環帶到一座神祕的山上，而當六耳彌猴抵達時，情況變得更糟糕了。

隨著重新鑄造三昧真火，深埋已久的祕密也浮出檯面。龍小驕的身上發生了可怕的事，而英雄們也瀕臨崩潰邊緣！

白骨精即將實現她的命運，她成功地讓英雄們四散各地，現在就看齊小天如何把大家聚集在一起，拯救世界！

The Lady Bone Demon successfully overcomes the Monkey King and now has the perfect champion to complete her 'destiny'. MK reunites with Mei and Red Son, but before they can come up with a plan, the corrupted Monkey King arrives to take Mei and the Samadhi Fire to his new master! Now MK and the heroes will need to fight their strongest opponent ever!

With the Monkey King under Lady Bone Demon's control and Mei imprisoned in her tower, MK and other heroes formulate a plan to rescue their friends and save the world. With help from Macaque, new information from a depowered Mayor, and the Lady Bone Demon's power stretch thin, this is their last chance to stop Lady Bone Demon!

The final battle between the heroes and Lady Bone Demon has begun. MK must save his mentor from her control and stop her before she can release the Samadhi Fire and destroy the world! When all our heroes embrace their own destinies, the ultimate fight is on. Working together, they have one shot at defeating their ultimate enemy once and for all!