赛加的秘密第一季探讨了友情与勇气的主题。阿部定的最后七日

　　10 year old Kuba lives in Warsaw and collects stones. He obtains a fragment of a magic stone, the Sagala, and searches for the other parts. That leads to an adventurous trip through space and time, into the past to various cultures of the world. Difficult tasks have to be solved to finally obtain the complete stone. The series has 14 episodes.