Binan Koukou Chikyuu Bouei-bu Love! Love! Love!

Graduation is approaching for the older members of the Earth Defense Club, prompting the boys to look back on the ridiculous battles and friendships that filled their school years. Beneath the jokes, the thought of separating makes the coming ceremony feel far more important than they expected.

Their final school day refuses to stay peaceful when Zundar and Dadacha unleash the Second Button Monster during graduation. As the Defense Club transforms once again, Yumoto's usually overflowing love power falters, forcing the boys to face one last threat while deciding what their bond will mean after school ends.