The "all for one/one for all" message is a good lesson in unity and teamwork, and the Musketeers all look for a cause to take up as their fight.
Lots of sword and musket fights leave a few characters dead, but there's no blood. One character looks like she's falling to her death; a villain is felled by a sword wound after a long duel; two flying ships battle with cannons and then switch to hand-to-hand combat between crew members.
A few kisses and some heavy flirting, as well as some cleavage-popping period dresses.
Relatively infrequent language includes "s--t," "damn," "hell," "ass," "bleeding," "t-t," and "oh God" (as an exclamation).
Drinking, Drugs & Smoking
The Musketeers drink often in their leisure time; Porthos, in particular, is a big drinker.