Planet Hart was destroyed and everything was ruined. Unexpectedly, the Sori Planet and Bertie Planet were tit for tat like natural enemies, but they were surprisingly tacit and consistent in destroying the Hart Planet. The war between Lim and Boao finally stopped, and the antagonism that had existed for three million years was reconciled. This is impossible, but why is it so full of surprises as if it had been planned for a long time? Everything that was supposed to be fixed has mutated. What exactly is it? Why did its appearance change everything? Everything seemed to be finished, like stagnant water, like a dry well, like a dark and deep cave, like a sleeping boulder, like the extreme cold freezing all life, everything stopped in an instant. The originally breathing world was suffocated, dizzy, and lethargic. But why would a young world and a young space become like this? Is everything just because of Child's heart? A group of high-spirited teenagers embarked on a journey but in exchange the world fell. Ruins, desolation, thick smoke, friends have long since fallen asleep. "If I can, if I have the chance, I will restore everything to its original state!"
Mission: Unity and love, mutual help, team spirit, adventure spirit