In order of appearance:
After everyone chose someone to chase Ikuto's stepfather they find a voice recorder. Then, they find a secret room, they go in and find a kid called Hikaru, him being Easter's boss. Amu quickly relizes it's the same kid she and Ami crashed into in town. Then Amu, Tadase, and Ikuto get traped in X egg traps. Hikaru says that the Embryo is too small and tosses it to the ground, it then turns into stone. Amu's shugo charas' then panick around the Embryo. Then, from the purple violin, the Black egg comes out, and Hikaru says wants it instead of the Embryo. After this there's an earthquake and Hikaru's rock collection breaks, and thus, they fall, then Ikuto's stepfather protects Hikaru, but Hikaru only wants to protect his rocks.Tsukasa then suddenly appears and talks to Hikaru. Hikaru then gets mad at him, after this, there's a flashback sequence..