As Mark navigates through the dangers of Comic-Con International, Sergio-still lost in the Chula Vista Safari Jungle Land-meets snakes, vultures, and more lions! Meanwhile, Groo decides to help Tarzan defeat the slavers he's been tracking-if only Tarzan knew Groo's potential for disaster. Tarzan artist Thomas Yeates jams with Sergio Aragon?s! Also-Rufferto the dog continues to entertain in his marvelous backup strips!