The Sparticle Mystery - Season 2 Episode 6 -

The Sparticles find the stone which opens the Quantum Nexus but Jeffrey gets poisoned by itcyflax flower so therefore the Sparticles go to a castle to get a treatment but Holly messed up their car so Holly and Serena have to give them a ride to a castle that has the cure but the Sparticles and Holly and Serena soon get caught up in duels when they lose their sword.