The Amazing Spider-Man Annual Vol. 1 (1964-2018) #24

Plot

Guest-starring Ant-Man. Part 1 of Spidey's Totally Tiny Adventure. Peter Parker and Scott Lang attend the Tomorrow Exposition which showcases new cutting edge scientific technology! Both men enjoy touring the exhibits..until the techno-thieves strike! While the robbers break into the quark machine, the two heroes step away and change into their costumes! However during the process, the amazing one is accidentally exposed to Ant-Man's shrinking gas! No problem though! The web-slinger will just beat the thieves at pint-size! But once the battle is over, the wall-crawler can't return to full-size! Uh-oh! What now? (mycomicshop.com)