Swinging and leaping from building to building is part of the daily routine for Peter Parker in his role as Spider-Man. But it's not all fun and games for Spidey, because he knows with great powers come responsibility--and he uses his to fight evil! But when Spider-Man's spider-sense begins to go wild during his evening travels, and there is no danger present, he wonders what could possibly be wrong. Little does Spidey know that his senses are alerting him to the mutations going on inside his own body that could soon transform him forever!