Speed saves Trixie in time, but are made slaves and ordered to dig up the treasure. While escaping, Speed is captured and driven into the Nile in the Mach 5. He survives and returns with the police to rescue Trixie and battle a giant stone robot. As Splint Femur tries to escape with the gold on a plane. Speed and Calcia, who regain her memories, stowaway on the plane to stop Splint Femur.
蛇の沢サーキットの難所である連続7回カーブ、スネークベントに苦戦する剛は攻略の糸口が掴めぬまま走り出す。そこで、謎の車に追われながら見事な片車輪走行で追っ手を翻弄する男と出会い、活路を見出す。
