Babar (1989)

S5E7 Never Cry Alien

Title: Don’t Fear the Unknown Plot: Arthur orchestrates a humorous hoax that convinces his friends of an impending alien arrival. However, his prank takes an unexpected turn when he actually encounters a genuine UFO. To his dismay, no one takes him seriously, leaving Arthur grappling with disbelief from his friends while trying to convince them of the extraordinary sight he witnessed.