There are three seasons. So going into this i knew it was nickelodeon's series so i had low expectations.
So season one starts when Nina comes and everything else follows that. I not gonna be going into details. So the plot is kinda interesting and the sneaking is interesting but, after a while it just becomes boring, Acting is not the best in any case i think the main actress who portrays Nina just can't act. Characters are interesting but i would have loved if some of them got more love on the writing table.
Then we have season two that i think was the best of three. I had much more interesting plot and character interactions. Some characters that were not explored so mush in season one got more love. But still after that plot gets a little bit boring and then they introduce us to the subplot of collector. (That was little predictable who he is.) If there were more subplot and they got more love that part would be better. Acting was still not great but i think i saw some improvement on actress of Nina. Last episode of the season could be one of the best but i don't think it ended good on the half of Osiran and that stuff.
And there is the third season. I think they should have finished at the second season. The season is just not that great. I think it's stupid that Eddie became the leader of their group. I think he would be better in supporting role like in the second season. New characters are just stupid and the KT girl was just so forced. I mean i understand why they did it i i just wish they didn't when they knew.