Awakened from their deep slumber, the three train-type Ancient Engines join the Go-onger team and fellow Engines in protecting the Earth from the evil planet-polluting Gaiarks. Offered in this deluxe set are Engine Kishamoth, Engine T-line, and Engine K-Line, which can be connected into a 66cm-long train. An Engine Soul is included and can be inserted into Engine Kishamoth to produce sound effects and light its LED. Combine Engine Kishamoth with Engine T-line and Engine K-line to form the all-powerful Kyouretsu-O, or unleash the awesome power of the Engines by combining the three Ancient Engines with nine other Engines linked below to form the super-large Engine-O G12! Three test button batteries are included.