New Big-headed Son and Little-headed Dad 5: My Alien Friend

Big-headed son, who has a space dream, met a special "alien friend" by chance. The big-headed son and the marshmallow sister team up to participate in the Little Astronaut Project and jointly challenge the four-level space mission. Can they win the competition? How did the "alien friend" regain the confidence of the lagging Big Head Sons team at a critical moment? How will the little-headed father, who serves as the navigator, encourage the big-headed son to complete arduous tasks with his friends? And where does the “alien friend” that has never been made public come from?