In the hollow Mysterious Planet, seven kingdoms co-exist, all of them lit by the Sun's Blessing from the Kingdom of the Sun, in the middle of the planet. The light of the core sun is necessary for the continued existence of all the kingdoms. Yet, something is causing the Sun's Blessing to weaken. If something isn't done, it will be the end of life in the Mysterious Planet. Fortunately, the twin princesses of the Sun Kingdom, Fine and Rein, have been endowed with the magic of the Prominence, and are looking for a way to fix things.
In the hollow Mysterious Planet, seven kingdoms co-exist, all of them lit by the Sun's Blessing from the Kingdom of the Sun, in the middle of the planet. The light of the core sun is necessary for the continued existence of all the kingdoms. Yet, something is causing the Sun's Blessing to weaken. If something isn't done, it will be the end of life in the Mysterious Planet. Fortunately, the twin princesses of the Sun Kingdom, Fine and Rein, have been endowed with the magic of the Prominence, and are looking for a way to fix things.
Sul pianeta Wonder coesistono sette regni, alimentati dalla Benedizione del Sole, una stella al centro del pianeta, la cui luce è necessaria per la sopravvivenza; ma quando la Benedizione del Sole inizia a diventare sempre più debole, la principessa Grace, custode della stella, incarica le principesse gemelle combinaguai del Regno Solare, Rein e Fine, di partire per indagare e salvare il loro mondo insieme all'animaletto Poomo.
不可思議星球是這七個國家星系中最和平的星球,但是圍繞著星球中心太陽王國的太陽光環,突然出現異變!糟糕了!這樣下去星球會毀滅的!
這個星球中有七個不同的國家,而每一個國家都一個屬於自己的工作。其中的一個國家可以說是掌管整個不可思議星球的生亡──太陽王國。
因為太陽王國是管理不可思議星球的「太陽光環」,各國都是靠「太陽光環」的光芒和將「太陽光環」的力量變成溫暖,才能讓大家不會受凍死亡。而現在有一個星球危機,只有太陽王國的公主才能拯教這個不可思議星球!但是太陽王國的兩位雙胞胎公主──法伊恩和蓮伊恩是這個不可思議星球「有史以來最不像公主的公主」。
而這套動畫講述這兩位公主如何拯救這個星球。