The Martian boyfriend Gardner (Asa Butterfield) falls from the sky, and a journey of searching for family and love is staged across the stars. The 16-year-old Martian boy Gardner returns to Earth, and with his yearning for all things new and beautiful, he breaks through the protection of scientists and medical staff, and embarks on a touching adventure with an Earth girl named Tulsa (Britt Robertson), pursuing the mystery of his birth and tasting pure first love together...