The music video for Hey! Say! JUMP's "Fantastic Time" features a great beat, neon-lit floors and strobe lights in a futuristic setting. The members sing and dance amidst the vibrant atmosphere. The lyrics express themes of belief, love, feeling, and dreaming, urging listeners to embrace change and enjoy the present moment. The song celebrates the excitement of living in the moment and chasing dreams, even in the face of uncertainty. The video captures a sense of energy and optimism, with the members embodying the spirit of adventure and embracing the fantastic times ahead.