As the climax of the final Manga story of Urusei Yatsura unfolds, the animated version reaches its pinnacle. Lum's newly-engaged partner, Lupa, makes an appearance, and a fresh game of tag between Lum and Ataru ensues. Their objective is to protect the Earth from destruction. Ataru's victory hinges solely on his ability to say the three words he has always evaded saying to Lum: "I love you." The question remains - will he muster up the courage to confess his true feelings and save the planet, or will his vanity result in humanity's demise?