The White Snake Sage tells Boruto to bring back the "Reverse Scale" from Garaga, a troublesome snake. Boruto and his friends head deeper into Ryuchi Cave and are confronted by a giant serpent. It is Garaga, the very one they seek, but its sheer power has the gang backed into a corner. Meanwhile, Moegi reports that Mitsuki's disappearance might involve someone who has access to crucial village secrets.

In order to get out of the barrier, Boruto desperately searches for his heart of stone, but he has little success. Then he encounters Sekki, one of the Genbu Three that participated in the recent Chunin Exams. Sekki has also come to the training ground in order to find his heart of stone. Seeing their predicament, Ohnoki tries to help them.