Kaito goes along with Tomioka inspect UDF Base Poseidon. There, the Chief reunites with old friends, but is interrupted by a monster.
People start suddenly becoming violent for brief periods of time, to a mysterious cause. Could an alien be behind it?
An alien named Kiif comes to Earth. The young boy Kakeru encourages him to stay and live as a human.
Elly gets involved with Dr. Kori, who is trying to trap the mysterious Unizin.
