Unlock the secrets of the Dragon Eye and come face to face with more dragons than anyone has ever imagined as Hiccup, Toothless and the Dragon Riders soar to the edge of adventure.
Life goes on after the tragic deaths of Hank and Dean. Meanwhile, the Monarch deals with life "inside" but you can't keep a good criminal mastermind down. But will King Gorilla prove to be his greatest ally, or his worst betrayer?
超人联盟缴获了一个预言球，预言球预言星星球谜瑞岛的人鱼公主会变成泡沫消失，并引起星星球海洋危机。五超人接到超人联盟的任务，前往谜瑞岛人鱼部落阻止预言发生。没想到魔法师乐呵呵还是夺走了人鱼公主的歌声，让人鱼公主变成了泡沫，超人们未能阻止预言的发生。最后不放弃的超人们合力打败了乐呵呵，救回了已经变成泡沫的人鱼公主，同时拯救了海洋世界。
