In June of Universal Century 0087, Lieutenant Zero Murasame and Second Lieutenant Leila Raymond, both enhanced humans serving in the Titans' military police, encountered a new AEUG mobile suit during an operation to uncover a "hidden AEUG" unit. After a fierce battle, Zero Murasame's Gundam Mk-II Prototype Unit 0 was severely damaged. Leila Raymond's Act Kämpfer also overheated due to exceeding its limits, rendering it unusable.

Therefore, Dr. Nanai, who was accompanying the unit as their chief supervisor, contacted the Augusta Research Institute headquarters and requested the deployment of a new prototype mobile suit for Zero and Leila.

Thus they...

HGUC Psycho Gaplant AL (Psycommu Weapon Equipped Mobile Suit) | モトッチ's Gunpla works