Boulder Strikes Again is the thirteenth episode of the first season in Brian and the Eeveelution Family's Adventures Chronicles.
Mr. Percival has decided to open a brand new quarry in the Skarloey line, and Thomas and Paxton can help too. But however to Rusty's horror, the quarry is being rebuild close to the hill where Boulder is standing! And Rusty soon begins to have PTSD flashbacks of his encounter with Boulder. And he tries to tell Mr. Percival the situation, but he assures him nothing bad will happen. However, chaos trikes the Boulder comes loose and begins chasing Rusty and the other engines! Can the team stop Boulder's chaotic path of destruction?!
- Mr. Percival guest stars in this episode.