Five assassins aboard a fast moving bullet train find out their missions have something in common.

Krypto the Super-Dog and Superman are inseparable best friends, sharing the same superpowers and fighting crime side by side in Metropolis. However, Krypto must master his own powers for a rescue mission when Superman is kidnapped.

After more than thirty years of service as one of the Navy's top aviators, Pete Mitchell is where he belongs, pushing the envelope as a courageous test pilot and dodging the advancement in rank that would ground him.