Spring break has Claire doing some spring cleaning, while Phil struggles with not being a spring chicken when Luke starts outperforming him at seemingly everything.
Seth pulls off a magnanimous gesture for Summer, then blows it. Lindsay and Ryan become physics lab partners and share some romantic chemistry.
Larry goes shopping to buy a bracelet for Cheryl and gets sidetracked with Richard Lewis and a blind man.
Ryan's off to Albuquerque to invite his mom, Dawn, to graduation. Seth quits Summer, and at Volchok's party, Marissa sees something secretly poured into a drink.
A practical joke-loving Marine is found dead; Ziva adjusts to her new role on the team.