S03:E21 - Trapped

Jungle exploration puts Marguerite and Roxton in peril when an explosion leaves them trapped in an underground cavern. Their only hope to escape is Challenger...who was also injured in the explosion, leaving him with amnesia. With Challenger's memory of who he is and where his friends are erased from his mind, Marguerite and Roxton are left to fear for their lives and confront their feelings. Meanwhile, Finn helps Veronica uncover another piece of her past.